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Finding the Fourth Proportional to 415,735.70, 623,787.15 and 202,385.30

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Solution

The fourth proportional to 415,735.70, 623,787.15 and 202,385.30 is: 303,667.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,735.70 : 623,787.15 = 202,385.30 : x
  2. Step 2: Convert to fraction form
    415,735.70/623,787.15 = 202,385.30/x
  3. Step 3: Cross multiply
    415,735.70x = 623,787.15 × 202,385.30
  4. Step 4: Simplify right side
    415,735.70x = 126,245,349,488.90
  5. Step 5: Solve for x
    x = 126,245,349,488.90/415,735.70
  6. Step 6: Final answer
    x = 303,667.33

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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.