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Finding the Fourth Proportional to 387,253.44, 534,459.86 and 217,487.56

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Solution

The fourth proportional to 387,253.44, 534,459.86 and 217,487.56 is: 300,160.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,253.44 : 534,459.86 = 217,487.56 : x
  2. Step 2: Convert to fraction form
    387,253.44/534,459.86 = 217,487.56/x
  3. Step 3: Cross multiply
    387,253.44x = 534,459.86 × 217,487.56
  4. Step 4: Simplify right side
    387,253.44x = 116,238,370,869.34
  5. Step 5: Solve for x
    x = 116,238,370,869.34/387,253.44
  6. Step 6: Final answer
    x = 300,160.98

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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.