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Finding the Fourth Proportional to 331,853.60, 497,780.40 and 272,804.60

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Solution

The fourth proportional to 331,853.60, 497,780.40 and 272,804.60 is: 409,206.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,853.60 : 497,780.40 = 272,804.60 : x
  2. Step 2: Convert to fraction form
    331,853.60/497,780.40 = 272,804.60/x
  3. Step 3: Cross multiply
    331,853.60x = 497,780.40 × 272,804.60
  4. Step 4: Simplify right side
    331,853.60x = 135,796,782,909.84
  5. Step 5: Solve for x
    x = 135,796,782,909.84/331,853.60
  6. Step 6: Final answer
    x = 409,206.90

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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.