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Finding the Fourth Proportional to 355,686.80, 533,530.19 and 145,324.73

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Solution

The fourth proportional to 355,686.80, 533,530.19 and 145,324.73 is: 217,987.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,686.80 : 533,530.19 = 145,324.73 : x
  2. Step 2: Convert to fraction form
    355,686.80/533,530.19 = 145,324.73/x
  3. Step 3: Cross multiply
    355,686.80x = 533,530.19 × 145,324.73
  4. Step 4: Simplify right side
    355,686.80x = 77,535,132,505.74
  5. Step 5: Solve for x
    x = 77,535,132,505.74/355,686.80
  6. Step 6: Final answer
    x = 217,987.10

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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.