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Finding the Fourth Proportional to 499,272.20, 748,908.30 and 144,297.80

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Solution

The fourth proportional to 499,272.20, 748,908.30 and 144,297.80 is: 216,446.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,272.20 : 748,908.30 = 144,297.80 : x
  2. Step 2: Convert to fraction form
    499,272.20/748,908.30 = 144,297.80/x
  3. Step 3: Cross multiply
    499,272.20x = 748,908.30 × 144,297.80
  4. Step 4: Simplify right side
    499,272.20x = 108,065,820,091.74
  5. Step 5: Solve for x
    x = 108,065,820,091.74/499,272.20
  6. Step 6: Final answer
    x = 216,446.70

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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.