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Finding the Fourth Proportional to 265,084.80, 397,540.80 and 98,851.20

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Solution

The fourth proportional to 265,084.80, 397,540.80 and 98,851.20 is: 148,244.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,084.80 : 397,540.80 = 98,851.20 : x
  2. Step 2: Convert to fraction form
    265,084.80/397,540.80 = 98,851.20/x
  3. Step 3: Cross multiply
    265,084.80x = 397,540.80 × 98,851.20
  4. Step 4: Simplify right side
    265,084.80x = 39,297,385,128.96
  5. Step 5: Solve for x
    x = 39,297,385,128.96/265,084.80
  6. Step 6: Final answer
    x = 148,244.58

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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.