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Finding the Fourth Proportional to 482,503.80, 665,755.56 and 278,551.20

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Solution

The fourth proportional to 482,503.80, 665,755.56 and 278,551.20 is: 384,343.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,503.80 : 665,755.56 = 278,551.20 : x
  2. Step 2: Convert to fraction form
    482,503.80/665,755.56 = 278,551.20/x
  3. Step 3: Cross multiply
    482,503.80x = 665,755.56 × 278,551.20
  4. Step 4: Simplify right side
    482,503.80x = 185,447,010,144.67
  5. Step 5: Solve for x
    x = 185,447,010,144.67/482,503.80
  6. Step 6: Final answer
    x = 384,343.11

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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.