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Finding the Fourth Proportional to 391,063.48, 586,447.60 and 180,553.80

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Solution

The fourth proportional to 391,063.48, 586,447.60 and 180,553.80 is: 270,762.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,063.48 : 586,447.60 = 180,553.80 : x
  2. Step 2: Convert to fraction form
    391,063.48/586,447.60 = 180,553.80/x
  3. Step 3: Cross multiply
    391,063.48x = 586,447.60 × 180,553.80
  4. Step 4: Simplify right side
    391,063.48x = 105,885,342,680.88
  5. Step 5: Solve for x
    x = 105,885,342,680.88/391,063.48
  6. Step 6: Final answer
    x = 270,762.54

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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.