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Finding the Fourth Proportional to 482,655.80, 723,980.10 and 145,695.80

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Solution

The fourth proportional to 482,655.80, 723,980.10 and 145,695.80 is: 218,542.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,655.80 : 723,980.10 = 145,695.80 : x
  2. Step 2: Convert to fraction form
    482,655.80/723,980.10 = 145,695.80/x
  3. Step 3: Cross multiply
    482,655.80x = 723,980.10 × 145,695.80
  4. Step 4: Simplify right side
    482,655.80x = 105,480,859,853.58
  5. Step 5: Solve for x
    x = 105,480,859,853.58/482,655.80
  6. Step 6: Final answer
    x = 218,542.61

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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.