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Finding the Fourth Proportional to 387,134.54, 534,439.92 and 242,020.94

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Solution

The fourth proportional to 387,134.54, 534,439.92 and 242,020.94 is: 334,110.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,134.54 : 534,439.92 = 242,020.94 : x
  2. Step 2: Convert to fraction form
    387,134.54/534,439.92 = 242,020.94/x
  3. Step 3: Cross multiply
    387,134.54x = 534,439.92 × 242,020.94
  4. Step 4: Simplify right side
    387,134.54x = 129,345,651,550.42
  5. Step 5: Solve for x
    x = 129,345,651,550.42/387,134.54
  6. Step 6: Final answer
    x = 334,110.34

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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.