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Finding the Fourth Proportional to 331,356.60, 497,180.70 and 153,772.20

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Solution

The fourth proportional to 331,356.60, 497,180.70 and 153,772.20 is: 230,725.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,356.60 : 497,180.70 = 153,772.20 : x
  2. Step 2: Convert to fraction form
    331,356.60/497,180.70 = 153,772.20/x
  3. Step 3: Cross multiply
    331,356.60x = 497,180.70 × 153,772.20
  4. Step 4: Simplify right side
    331,356.60x = 76,452,570,036.54
  5. Step 5: Solve for x
    x = 76,452,570,036.54/331,356.60
  6. Step 6: Final answer
    x = 230,725.96

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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.