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Finding the Fourth Proportional to 331,907.60, 497,803.80 and 121,437.20

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Solution

The fourth proportional to 331,907.60, 497,803.80 and 121,437.20 is: 182,134.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,907.60 : 497,803.80 = 121,437.20 : x
  2. Step 2: Convert to fraction form
    331,907.60/497,803.80 = 121,437.20/x
  3. Step 3: Cross multiply
    331,907.60x = 497,803.80 × 121,437.20
  4. Step 4: Simplify right side
    331,907.60x = 60,451,899,621.36
  5. Step 5: Solve for x
    x = 60,451,899,621.36/331,907.60
  6. Step 6: Final answer
    x = 182,134.73

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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.