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Finding the Fourth Proportional to 417,631.60, 626,447.40 and 151,391.80

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Solution

The fourth proportional to 417,631.60, 626,447.40 and 151,391.80 is: 227,087.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,631.60 : 626,447.40 = 151,391.80 : x
  2. Step 2: Convert to fraction form
    417,631.60/626,447.40 = 151,391.80/x
  3. Step 3: Cross multiply
    417,631.60x = 626,447.40 × 151,391.80
  4. Step 4: Simplify right side
    417,631.60x = 94,838,999,491.32
  5. Step 5: Solve for x
    x = 94,838,999,491.32/417,631.60
  6. Step 6: Final answer
    x = 227,087.70

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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.