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Finding the Fourth Proportional to 332,972, 499,458.48 and 135,980

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Solution

The fourth proportional to 332,972, 499,458.48 and 135,980 is: 203,970.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,972 : 499,458.48 = 135,980 : x
  2. Step 2: Convert to fraction form
    332,972/499,458.48 = 135,980/x
  3. Step 3: Cross multiply
    332,972x = 499,458.48 × 135,980
  4. Step 4: Simplify right side
    332,972x = 67,916,364,110.40
  5. Step 5: Solve for x
    x = 67,916,364,110.40/332,972
  6. Step 6: Final answer
    x = 203,970.20

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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.