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Finding the Fourth Proportional to 387,050.52, 534,100.23 and 217,251.84

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Solution

The fourth proportional to 387,050.52, 534,100.23 and 217,251.84 is: 299,790.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,050.52 : 534,100.23 = 217,251.84 : x
  2. Step 2: Convert to fraction form
    387,050.52/534,100.23 = 217,251.84/x
  3. Step 3: Cross multiply
    387,050.52x = 534,100.23 × 217,251.84
  4. Step 4: Simplify right side
    387,050.52x = 116,034,257,711.92
  5. Step 5: Solve for x
    x = 116,034,257,711.92/387,050.52
  6. Step 6: Final answer
    x = 299,790.99

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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.