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Finding the Fourth Proportional to 487,372.80, 731,059.20 and 353,625.60

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Solution

The fourth proportional to 487,372.80, 731,059.20 and 353,625.60 is: 530,438.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,372.80 : 731,059.20 = 353,625.60 : x
  2. Step 2: Convert to fraction form
    487,372.80/731,059.20 = 353,625.60/x
  3. Step 3: Cross multiply
    487,372.80x = 731,059.20 × 353,625.60
  4. Step 4: Simplify right side
    487,372.80x = 258,521,248,235.52
  5. Step 5: Solve for x
    x = 258,521,248,235.52/487,372.80
  6. Step 6: Final answer
    x = 530,438.40

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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.