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Finding the Fourth Proportional to 549,990, 759,016.08 and 308,350.08

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Solution

The fourth proportional to 549,990, 759,016.08 and 308,350.08 is: 425,539.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,990 : 759,016.08 = 308,350.08 : x
  2. Step 2: Convert to fraction form
    549,990/759,016.08 = 308,350.08/x
  3. Step 3: Cross multiply
    549,990x = 759,016.08 × 308,350.08
  4. Step 4: Simplify right side
    549,990x = 234,042,668,989.29
  5. Step 5: Solve for x
    x = 234,042,668,989.29/549,990
  6. Step 6: Final answer
    x = 425,539.86

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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.