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Finding the Fourth Proportional to 272,382.60, 408,646.80 and 243,003.90

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Solution

The fourth proportional to 272,382.60, 408,646.80 and 243,003.90 is: 364,570.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,382.60 : 408,646.80 = 243,003.90 : x
  2. Step 2: Convert to fraction form
    272,382.60/408,646.80 = 243,003.90/x
  3. Step 3: Cross multiply
    272,382.60x = 408,646.80 × 243,003.90
  4. Step 4: Simplify right side
    272,382.60x = 99,302,766,122.52
  5. Step 5: Solve for x
    x = 99,302,766,122.52/272,382.60
  6. Step 6: Final answer
    x = 364,570.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.