Home / 261,999,428.12-392,957,494.17-87,107,915.40

Finding the Fourth Proportional to 261,999,428.12, 392,957,494.17 and 87,107,915.40

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Solution

The fourth proportional to 261,999,428.12, 392,957,494.17 and 87,107,915.40 is: 130,648,026.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,999,428.12 : 392,957,494.17 = 87,107,915.40 : x
  2. Step 2: Convert to fraction form
    261,999,428.12/392,957,494.17 = 87,107,915.40/x
  3. Step 3: Cross multiply
    261,999,428.12x = 392,957,494.17 × 87,107,915.40
  4. Step 4: Simplify right side
    261,999,428.12x = 34,229,708,157,956,356
  5. Step 5: Solve for x
    x = 34,229,708,157,956,356/261,999,428.12
  6. Step 6: Final answer
    x = 130,648,026.24

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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.