Home / 387,311.27-534,591.05-217,600.07

Finding the Fourth Proportional to 387,311.27, 534,591.05 and 217,600.07

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Solution

The fourth proportional to 387,311.27, 534,591.05 and 217,600.07 is: 300,345.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,311.27 : 534,591.05 = 217,600.07 : x
  2. Step 2: Convert to fraction form
    387,311.27/534,591.05 = 217,600.07/x
  3. Step 3: Cross multiply
    387,311.27x = 534,591.05 × 217,600.07
  4. Step 4: Simplify right side
    387,311.27x = 116,327,046,140.42
  5. Step 5: Solve for x
    x = 116,327,046,140.42/387,311.27
  6. Step 6: Final answer
    x = 300,345.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.