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Finding the Fourth Proportional to 391,249.38, 539,926.38 and 230,111.22

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Solution

The fourth proportional to 391,249.38, 539,926.38 and 230,111.22 is: 317,554.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,249.38 : 539,926.38 = 230,111.22 : x
  2. Step 2: Convert to fraction form
    391,249.38/539,926.38 = 230,111.22/x
  3. Step 3: Cross multiply
    391,249.38x = 539,926.38 × 230,111.22
  4. Step 4: Simplify right side
    391,249.38x = 124,243,118,011.98
  5. Step 5: Solve for x
    x = 124,243,118,011.98/391,249.38
  6. Step 6: Final answer
    x = 317,554.80

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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.