Home / 387,161.20-534,265.10-215,091.23

Finding the Fourth Proportional to 387,161.20, 534,265.10 and 215,091.23

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Solution

The fourth proportional to 387,161.20, 534,265.10 and 215,091.23 is: 296,816.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,161.20 : 534,265.10 = 215,091.23 : x
  2. Step 2: Convert to fraction form
    387,161.20/534,265.10 = 215,091.23/x
  3. Step 3: Cross multiply
    387,161.20x = 534,265.10 × 215,091.23
  4. Step 4: Simplify right side
    387,161.20x = 114,915,737,505.07
  5. Step 5: Solve for x
    x = 114,915,737,505.07/387,161.20
  6. Step 6: Final answer
    x = 296,816.26

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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.