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Finding the Fourth Proportional to 260,454.52, 390,696.90 and 100,531.36

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Solution

The fourth proportional to 260,454.52, 390,696.90 and 100,531.36 is: 150,802.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,454.52 : 390,696.90 = 100,531.36 : x
  2. Step 2: Convert to fraction form
    260,454.52/390,696.90 = 100,531.36/x
  3. Step 3: Cross multiply
    260,454.52x = 390,696.90 × 100,531.36
  4. Step 4: Simplify right side
    260,454.52x = 39,277,290,704.78
  5. Step 5: Solve for x
    x = 39,277,290,704.78/260,454.52
  6. Step 6: Final answer
    x = 150,802.88

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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.