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Finding the Fourth Proportional to 549,057.79, 757,663.15 and 304,034.21

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Solution

The fourth proportional to 549,057.79, 757,663.15 and 304,034.21 is: 419,546.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,057.79 : 757,663.15 = 304,034.21 : x
  2. Step 2: Convert to fraction form
    549,057.79/757,663.15 = 304,034.21/x
  3. Step 3: Cross multiply
    549,057.79x = 757,663.15 × 304,034.21
  4. Step 4: Simplify right side
    549,057.79x = 230,355,511,947.88
  5. Step 5: Solve for x
    x = 230,355,511,947.88/549,057.79
  6. Step 6: Final answer
    x = 419,546.94

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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.