Home / 387,098.33-534,178.40-215,028.20

Finding the Fourth Proportional to 387,098.33, 534,178.40 and 215,028.20

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Solution

The fourth proportional to 387,098.33, 534,178.40 and 215,028.20 is: 296,729.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,098.33 : 534,178.40 = 215,028.20 : x
  2. Step 2: Convert to fraction form
    387,098.33/534,178.40 = 215,028.20/x
  3. Step 3: Cross multiply
    387,098.33x = 534,178.40 × 215,028.20
  4. Step 4: Simplify right side
    387,098.33x = 114,863,420,091.19
  5. Step 5: Solve for x
    x = 114,863,420,091.19/387,098.33
  6. Step 6: Final answer
    x = 296,729.31

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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.