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Finding the Fourth Proportional to 534,915.20, 802,372.80 and 239,427.20

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Solution

The fourth proportional to 534,915.20, 802,372.80 and 239,427.20 is: 359,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,915.20 : 802,372.80 = 239,427.20 : x
  2. Step 2: Convert to fraction form
    534,915.20/802,372.80 = 239,427.20/x
  3. Step 3: Cross multiply
    534,915.20x = 802,372.80 × 239,427.20
  4. Step 4: Simplify right side
    534,915.20x = 192,109,872,860.16
  5. Step 5: Solve for x
    x = 192,109,872,860.16/534,915.20
  6. Step 6: Final answer
    x = 359,140.80

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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.