Home / 387,169.11-534,235.64-217,370.43

Finding the Fourth Proportional to 387,169.11, 534,235.64 and 217,370.43

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Solution

The fourth proportional to 387,169.11, 534,235.64 and 217,370.43 is: 299,938.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,169.11 : 534,235.64 = 217,370.43 : x
  2. Step 2: Convert to fraction form
    387,169.11/534,235.64 = 217,370.43/x
  3. Step 3: Cross multiply
    387,169.11x = 534,235.64 × 217,370.43
  4. Step 4: Simplify right side
    387,169.11x = 116,127,029,701.27
  5. Step 5: Solve for x
    x = 116,127,029,701.27/387,169.11
  6. Step 6: Final answer
    x = 299,938.78

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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.