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Finding the Fourth Proportional to 266,799.20, 399,680.40 and 148,258.40

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Solution

The fourth proportional to 266,799.20, 399,680.40 and 148,258.40 is: 222,099.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,799.20 : 399,680.40 = 148,258.40 : x
  2. Step 2: Convert to fraction form
    266,799.20/399,680.40 = 148,258.40/x
  3. Step 3: Cross multiply
    266,799.20x = 399,680.40 × 148,258.40
  4. Step 4: Simplify right side
    266,799.20x = 59,255,976,615.36
  5. Step 5: Solve for x
    x = 59,255,976,615.36/266,799.20
  6. Step 6: Final answer
    x = 222,099.53

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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.