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Finding the Fourth Proportional to 344,687.20, 516,010.20 and 256,332.40

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Solution

The fourth proportional to 344,687.20, 516,010.20 and 256,332.40 is: 383,739.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,687.20 : 516,010.20 = 256,332.40 : x
  2. Step 2: Convert to fraction form
    344,687.20/516,010.20 = 256,332.40/x
  3. Step 3: Cross multiply
    344,687.20x = 516,010.20 × 256,332.40
  4. Step 4: Simplify right side
    344,687.20x = 132,270,132,990.48
  5. Step 5: Solve for x
    x = 132,270,132,990.48/344,687.20
  6. Step 6: Final answer
    x = 383,739.61

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1.5x scale

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.