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Finding the Fourth Proportional to 355,105.80, 532,205.10 and 144,505.80

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Solution

The fourth proportional to 355,105.80, 532,205.10 and 144,505.80 is: 216,574.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,105.80 : 532,205.10 = 144,505.80 : x
  2. Step 2: Convert to fraction form
    355,105.80/532,205.10 = 144,505.80/x
  3. Step 3: Cross multiply
    355,105.80x = 532,205.10 × 144,505.80
  4. Step 4: Simplify right side
    355,105.80x = 76,906,723,739.58
  5. Step 5: Solve for x
    x = 76,906,723,739.58/355,105.80
  6. Step 6: Final answer
    x = 216,574.11

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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.