Home / 431,929,665.60-647,951,330.40-159,491,803.20

Finding the Fourth Proportional to 431,929,665.60, 647,951,330.40 and 159,491,803.20

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Solution

The fourth proportional to 431,929,665.60, 647,951,330.40 and 159,491,803.20 is: 239,258,690.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,929,665.60 : 647,951,330.40 = 159,491,803.20 : x
  2. Step 2: Convert to fraction form
    431,929,665.60/647,951,330.40 = 159,491,803.20/x
  3. Step 3: Cross multiply
    431,929,665.60x = 647,951,330.40 × 159,491,803.20
  4. Step 4: Simplify right side
    431,929,665.60x = 103,342,926,071,334,960
  5. Step 5: Solve for x
    x = 103,342,926,071,334,960/431,929,665.60
  6. Step 6: Final answer
    x = 239,258,690.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.