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Finding the Fourth Proportional to 417,630.60, 626,445.90 and 151,390.80

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Solution

The fourth proportional to 417,630.60, 626,445.90 and 151,390.80 is: 227,086.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,630.60 : 626,445.90 = 151,390.80 : x
  2. Step 2: Convert to fraction form
    417,630.60/626,445.90 = 151,390.80/x
  3. Step 3: Cross multiply
    417,630.60x = 626,445.90 × 151,390.80
  4. Step 4: Simplify right side
    417,630.60x = 94,838,145,957.72
  5. Step 5: Solve for x
    x = 94,838,145,957.72/417,630.60
  6. Step 6: Final answer
    x = 227,086.20

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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.