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Finding the Fourth Proportional to 265,729.25, 398,592.78 and 66,045.89

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Solution

The fourth proportional to 265,729.25, 398,592.78 and 66,045.89 is: 99,068.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,729.25 : 398,592.78 = 66,045.89 : x
  2. Step 2: Convert to fraction form
    265,729.25/398,592.78 = 66,045.89/x
  3. Step 3: Cross multiply
    265,729.25x = 398,592.78 × 66,045.89
  4. Step 4: Simplify right side
    265,729.25x = 26,325,414,902.67
  5. Step 5: Solve for x
    x = 26,325,414,902.67/265,729.25
  6. Step 6: Final answer
    x = 99,068.56

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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.