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Finding the Fourth Proportional to 310,787.82, 466,135.60 and 86,124.83

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Solution

The fourth proportional to 310,787.82, 466,135.60 and 86,124.83 is: 129,174.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,787.82 : 466,135.60 = 86,124.83 : x
  2. Step 2: Convert to fraction form
    310,787.82/466,135.60 = 86,124.83/x
  3. Step 3: Cross multiply
    310,787.82x = 466,135.60 × 86,124.83
  4. Step 4: Simplify right side
    310,787.82x = 40,145,850,256.97
  5. Step 5: Solve for x
    x = 40,145,850,256.97/310,787.82
  6. Step 6: Final answer
    x = 129,174.46

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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.