Home / 439,285.20-657,615.60-261,700.80

Finding the Fourth Proportional to 439,285.20, 657,615.60 and 261,700.80

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Solution

The fourth proportional to 439,285.20, 657,615.60 and 261,700.80 is: 391,769.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,285.20 : 657,615.60 = 261,700.80 : x
  2. Step 2: Convert to fraction form
    439,285.20/657,615.60 = 261,700.80/x
  3. Step 3: Cross multiply
    439,285.20x = 657,615.60 × 261,700.80
  4. Step 4: Simplify right side
    439,285.20x = 172,098,528,612.48
  5. Step 5: Solve for x
    x = 172,098,528,612.48/439,285.20
  6. Step 6: Final answer
    x = 391,769.47

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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.