Home / 309,691,168,708.29-427,317,079,219.20-172,510,581,097.88

Finding the Fourth Proportional to 309,691,168,708.29, 427,317,079,219.20 and 172,510,581,097.88

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Solution

The fourth proportional to 309,691,168,708.29, 427,317,079,219.20 and 172,510,581,097.88 is: 238,032,998,992.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,691,168,708.29 : 427,317,079,219.20 = 172,510,581,097.88 : x
  2. Step 2: Convert to fraction form
    309,691,168,708.29/427,317,079,219.20 = 172,510,581,097.88/x
  3. Step 3: Cross multiply
    309,691,168,708.29x = 427,317,079,219.20 × 172,510,581,097.88
  4. Step 4: Simplify right side
    309,691,168,708.29x = 73,716,717,649,153,021,181,952
  5. Step 5: Solve for x
    x = 73,716,717,649,153,021,181,952/309,691,168,708.29
  6. Step 6: Final answer
    x = 238,032,998,992.59

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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.