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Finding the Fourth Proportional to 310,787.40, 466,134.96 and 86,124.41

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Solution

The fourth proportional to 310,787.40, 466,134.96 and 86,124.41 is: 129,173.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,787.40 : 466,134.96 = 86,124.41 : x
  2. Step 2: Convert to fraction form
    310,787.40/466,134.96 = 86,124.41/x
  3. Step 3: Cross multiply
    310,787.40x = 466,134.96 × 86,124.41
  4. Step 4: Simplify right side
    310,787.40x = 40,145,599,575.71
  5. Step 5: Solve for x
    x = 40,145,599,575.71/310,787.40
  6. Step 6: Final answer
    x = 129,173.83

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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.