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Finding the Fourth Proportional to 387,042.40, 534,119.04 and 217,277.74

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Solution

The fourth proportional to 387,042.40, 534,119.04 and 217,277.74 is: 299,843.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,042.40 : 534,119.04 = 217,277.74 : x
  2. Step 2: Convert to fraction form
    387,042.40/534,119.04 = 217,277.74/x
  3. Step 3: Cross multiply
    387,042.40x = 534,119.04 × 217,277.74
  4. Step 4: Simplify right side
    387,042.40x = 116,052,177,902.17
  5. Step 5: Solve for x
    x = 116,052,177,902.17/387,042.40
  6. Step 6: Final answer
    x = 299,843.58

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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.