Home / 261,491.20-391,892.14-103,633.52

Finding the Fourth Proportional to 261,491.20, 391,892.14 and 103,633.52

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Solution

The fourth proportional to 261,491.20, 391,892.14 and 103,633.52 is: 155,313.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,491.20 : 391,892.14 = 103,633.52 : x
  2. Step 2: Convert to fraction form
    261,491.20/391,892.14 = 103,633.52/x
  3. Step 3: Cross multiply
    261,491.20x = 391,892.14 × 103,633.52
  4. Step 4: Simplify right side
    261,491.20x = 40,613,161,928.53
  5. Step 5: Solve for x
    x = 40,613,161,928.53/261,491.20
  6. Step 6: Final answer
    x = 155,313.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.