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Finding the Fourth Proportional to 543,519.98, 815,278.89 and 144,200.78

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Solution

The fourth proportional to 543,519.98, 815,278.89 and 144,200.78 is: 216,300.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,519.98 : 815,278.89 = 144,200.78 : x
  2. Step 2: Convert to fraction form
    543,519.98/815,278.89 = 144,200.78/x
  3. Step 3: Cross multiply
    543,519.98x = 815,278.89 × 144,200.78
  4. Step 4: Simplify right side
    543,519.98x = 117,563,851,855.53
  5. Step 5: Solve for x
    x = 117,563,851,855.53/543,519.98
  6. Step 6: Final answer
    x = 216,300.88

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1.5x scale

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.