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Finding the Fourth Proportional to 373,873.68, 515,884.80 and 220,890.72

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Solution

The fourth proportional to 373,873.68, 515,884.80 and 220,890.72 is: 304,793.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,873.68 : 515,884.80 = 220,890.72 : x
  2. Step 2: Convert to fraction form
    373,873.68/515,884.80 = 220,890.72/x
  3. Step 3: Cross multiply
    373,873.68x = 515,884.80 × 220,890.72
  4. Step 4: Simplify right side
    373,873.68x = 113,954,164,909.06
  5. Step 5: Solve for x
    x = 113,954,164,909.06/373,873.68
  6. Step 6: Final answer
    x = 304,793.23

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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.