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Finding the Fourth Proportional to 486,625.80, 729,809.10 and 149,665.80

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Solution

The fourth proportional to 486,625.80, 729,809.10 and 149,665.80 is: 224,458.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,625.80 : 729,809.10 = 149,665.80 : x
  2. Step 2: Convert to fraction form
    486,625.80/729,809.10 = 149,665.80/x
  3. Step 3: Cross multiply
    486,625.80x = 729,809.10 × 149,665.80
  4. Step 4: Simplify right side
    486,625.80x = 109,227,462,798.78
  5. Step 5: Solve for x
    x = 109,227,462,798.78/486,625.80
  6. Step 6: Final answer
    x = 224,458.84

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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.