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Finding the Fourth Proportional to 353,739.52, 487,079.52 and 266,651.20

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Solution

The fourth proportional to 353,739.52, 487,079.52 and 266,651.20 is: 367,163.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,739.52 : 487,079.52 = 266,651.20 : x
  2. Step 2: Convert to fraction form
    353,739.52/487,079.52 = 266,651.20/x
  3. Step 3: Cross multiply
    353,739.52x = 487,079.52 × 266,651.20
  4. Step 4: Simplify right side
    353,739.52x = 129,880,338,503.42
  5. Step 5: Solve for x
    x = 129,880,338,503.42/353,739.52
  6. Step 6: Final answer
    x = 367,163.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.