Home / 309,691,168,707.29-427,317,079,217.82-172,510,581,096.88

Finding the Fourth Proportional to 309,691,168,707.29, 427,317,079,217.82 and 172,510,581,096.88

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Solution

The fourth proportional to 309,691,168,707.29, 427,317,079,217.82 and 172,510,581,096.88 is: 238,032,998,991.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,691,168,707.29 : 427,317,079,217.82 = 172,510,581,096.88 : x
  2. Step 2: Convert to fraction form
    309,691,168,707.29/427,317,079,217.82 = 172,510,581,096.88/x
  3. Step 3: Cross multiply
    309,691,168,707.29x = 427,317,079,217.82 × 172,510,581,096.88
  4. Step 4: Simplify right side
    309,691,168,707.29x = 73,716,717,648,487,636,795,392
  5. Step 5: Solve for x
    x = 73,716,717,648,487,636,795,392/309,691,168,707.29
  6. Step 6: Final answer
    x = 238,032,998,991.21

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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.