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Finding the Fourth Proportional to 402,220.55, 603,321.60 and 202,487.30

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Solution

The fourth proportional to 402,220.55, 603,321.60 and 202,487.30 is: 303,726.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,220.55 : 603,321.60 = 202,487.30 : x
  2. Step 2: Convert to fraction form
    402,220.55/603,321.60 = 202,487.30/x
  3. Step 3: Cross multiply
    402,220.55x = 603,321.60 × 202,487.30
  4. Step 4: Simplify right side
    402,220.55x = 122,164,961,815.68
  5. Step 5: Solve for x
    x = 122,164,961,815.68/402,220.55
  6. Step 6: Final answer
    x = 303,726.31

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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.