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Finding the Fourth Proportional to 402,702.80, 603,670.20 and 149,915.60

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Solution

The fourth proportional to 402,702.80, 603,670.20 and 149,915.60 is: 224,730.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,702.80 : 603,670.20 = 149,915.60 : x
  2. Step 2: Convert to fraction form
    402,702.80/603,670.20 = 149,915.60/x
  3. Step 3: Cross multiply
    402,702.80x = 603,670.20 × 149,915.60
  4. Step 4: Simplify right side
    402,702.80x = 90,499,580,235.12
  5. Step 5: Solve for x
    x = 90,499,580,235.12/402,702.80
  6. Step 6: Final answer
    x = 224,730.45

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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.