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Finding the Fourth Proportional to 485,956.87, 729,075.20 and 149,046.95

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Solution

The fourth proportional to 485,956.87, 729,075.20 and 149,046.95 is: 223,613.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,956.87 : 729,075.20 = 149,046.95 : x
  2. Step 2: Convert to fraction form
    485,956.87/729,075.20 = 149,046.95/x
  3. Step 3: Cross multiply
    485,956.87x = 729,075.20 × 149,046.95
  4. Step 4: Simplify right side
    485,956.87x = 108,666,435,958.09
  5. Step 5: Solve for x
    x = 108,666,435,958.09/485,956.87
  6. Step 6: Final answer
    x = 223,613.34

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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.