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Finding the Fourth Proportional to 391,597.13, 540,299.86 and 225,983.14

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Solution

The fourth proportional to 391,597.13, 540,299.86 and 225,983.14 is: 311,796.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,597.13 : 540,299.86 = 225,983.14 : x
  2. Step 2: Convert to fraction form
    391,597.13/540,299.86 = 225,983.14/x
  3. Step 3: Cross multiply
    391,597.13x = 540,299.86 × 225,983.14
  4. Step 4: Simplify right side
    391,597.13x = 122,098,656,988.65
  5. Step 5: Solve for x
    x = 122,098,656,988.65/391,597.13
  6. Step 6: Final answer
    x = 311,796.61

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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.