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Finding the Fourth Proportional to 331,873.60, 497,752.80 and 121,403.20

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Solution

The fourth proportional to 331,873.60, 497,752.80 and 121,403.20 is: 182,083.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,873.60 : 497,752.80 = 121,403.20 : x
  2. Step 2: Convert to fraction form
    331,873.60/497,752.80 = 121,403.20/x
  3. Step 3: Cross multiply
    331,873.60x = 497,752.80 × 121,403.20
  4. Step 4: Simplify right side
    331,873.60x = 60,428,782,728.96
  5. Step 5: Solve for x
    x = 60,428,782,728.96/331,873.60
  6. Step 6: Final answer
    x = 182,083.73

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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.