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Finding the Fourth Proportional to 387,713.31, 534,965.20 and 226,537.21

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Solution

The fourth proportional to 387,713.31, 534,965.20 and 226,537.21 is: 312,575.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,713.31 : 534,965.20 = 226,537.21 : x
  2. Step 2: Convert to fraction form
    387,713.31/534,965.20 = 226,537.21/x
  3. Step 3: Cross multiply
    387,713.31x = 534,965.20 × 226,537.21
  4. Step 4: Simplify right side
    387,713.31x = 121,189,523,855.09
  5. Step 5: Solve for x
    x = 121,189,523,855.09/387,713.31
  6. Step 6: Final answer
    x = 312,575.09

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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.