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Finding the Fourth Proportional to 438,142.80, 656,695.80 and 185,422.80

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Solution

The fourth proportional to 438,142.80, 656,695.80 and 185,422.80 is: 277,914.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,142.80 : 656,695.80 = 185,422.80 : x
  2. Step 2: Convert to fraction form
    438,142.80/656,695.80 = 185,422.80/x
  3. Step 3: Cross multiply
    438,142.80x = 656,695.80 × 185,422.80
  4. Step 4: Simplify right side
    438,142.80x = 121,766,373,984.24
  5. Step 5: Solve for x
    x = 121,766,373,984.24/438,142.80
  6. Step 6: Final answer
    x = 277,914.81

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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.