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Finding the Fourth Proportional to 399,177.60, 598,766.40 and 177,561.60

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Solution

The fourth proportional to 399,177.60, 598,766.40 and 177,561.60 is: 266,342.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,177.60 : 598,766.40 = 177,561.60 : x
  2. Step 2: Convert to fraction form
    399,177.60/598,766.40 = 177,561.60/x
  3. Step 3: Cross multiply
    399,177.60x = 598,766.40 × 177,561.60
  4. Step 4: Simplify right side
    399,177.60x = 106,317,920,010.24
  5. Step 5: Solve for x
    x = 106,317,920,010.24/399,177.60
  6. Step 6: Final answer
    x = 266,342.40

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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.