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Finding the Fourth Proportional to 387,149.63, 534,034.82 and 243,660.56

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Solution

The fourth proportional to 387,149.63, 534,034.82 and 243,660.56 is: 336,105.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,149.63 : 534,034.82 = 243,660.56 : x
  2. Step 2: Convert to fraction form
    387,149.63/534,034.82 = 243,660.56/x
  3. Step 3: Cross multiply
    387,149.63x = 534,034.82 × 243,660.56
  4. Step 4: Simplify right side
    387,149.63x = 130,123,221,239.68
  5. Step 5: Solve for x
    x = 130,123,221,239.68/387,149.63
  6. Step 6: Final answer
    x = 336,105.77

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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.