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Finding the Fourth Proportional to 549,806.80, 758,753.92 and 308,080.42

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Solution

The fourth proportional to 549,806.80, 758,753.92 and 308,080.42 is: 425,162.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,806.80 : 758,753.92 = 308,080.42 : x
  2. Step 2: Convert to fraction form
    549,806.80/758,753.92 = 308,080.42/x
  3. Step 3: Cross multiply
    549,806.80x = 758,753.92 × 308,080.42
  4. Step 4: Simplify right side
    549,806.80x = 233,757,226,350.25
  5. Step 5: Solve for x
    x = 233,757,226,350.25/549,806.80
  6. Step 6: Final answer
    x = 425,162.49

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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.