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Finding the Fourth Proportional to 391,349.62, 540,031.89 and 230,210.74

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Solution

The fourth proportional to 391,349.62, 540,031.89 and 230,210.74 is: 317,672.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,349.62 : 540,031.89 = 230,210.74 : x
  2. Step 2: Convert to fraction form
    391,349.62/540,031.89 = 230,210.74/x
  3. Step 3: Cross multiply
    391,349.62x = 540,031.89 × 230,210.74
  4. Step 4: Simplify right side
    391,349.62x = 124,321,141,020.50
  5. Step 5: Solve for x
    x = 124,321,141,020.50/391,349.62
  6. Step 6: Final answer
    x = 317,672.83

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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.