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Finding the Fourth Proportional to 391,054.20, 586,581.30 and 302,480.70

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Solution

The fourth proportional to 391,054.20, 586,581.30 and 302,480.70 is: 453,721.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,054.20 : 586,581.30 = 302,480.70 : x
  2. Step 2: Convert to fraction form
    391,054.20/586,581.30 = 302,480.70/x
  3. Step 3: Cross multiply
    391,054.20x = 586,581.30 × 302,480.70
  4. Step 4: Simplify right side
    391,054.20x = 177,429,522,230.91
  5. Step 5: Solve for x
    x = 177,429,522,230.91/391,054.20
  6. Step 6: Final answer
    x = 453,721.05

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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.