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Finding the Fourth Proportional to 387,047.52, 534,096.09 and 217,248.84

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Solution

The fourth proportional to 387,047.52, 534,096.09 and 217,248.84 is: 299,786.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,047.52 : 534,096.09 = 217,248.84 : x
  2. Step 2: Convert to fraction form
    387,047.52/534,096.09 = 217,248.84/x
  3. Step 3: Cross multiply
    387,047.52x = 534,096.09 × 217,248.84
  4. Step 4: Simplify right side
    387,047.52x = 116,031,756,001.04
  5. Step 5: Solve for x
    x = 116,031,756,001.04/387,047.52
  6. Step 6: Final answer
    x = 299,786.85

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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.