Home / 309,691,168,705.28-427,317,079,215.05-172,510,581,094.88

Finding the Fourth Proportional to 309,691,168,705.28, 427,317,079,215.05 and 172,510,581,094.88

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Solution

The fourth proportional to 309,691,168,705.28, 427,317,079,215.05 and 172,510,581,094.88 is: 238,032,998,988.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,691,168,705.28 : 427,317,079,215.05 = 172,510,581,094.88 : x
  2. Step 2: Convert to fraction form
    309,691,168,705.28/427,317,079,215.05 = 172,510,581,094.88/x
  3. Step 3: Cross multiply
    309,691,168,705.28x = 427,317,079,215.05 × 172,510,581,094.88
  4. Step 4: Simplify right side
    309,691,168,705.28x = 73,716,717,647,155,139,969,024
  5. Step 5: Solve for x
    x = 73,716,717,647,155,139,969,024/309,691,168,705.28
  6. Step 6: Final answer
    x = 238,032,998,988.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.