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Finding the Fourth Proportional to 268,481.22, 402,720.02 and 91,113.10

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Solution

The fourth proportional to 268,481.22, 402,720.02 and 91,113.10 is: 136,669.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,481.22 : 402,720.02 = 91,113.10 : x
  2. Step 2: Convert to fraction form
    268,481.22/402,720.02 = 91,113.10/x
  3. Step 3: Cross multiply
    268,481.22x = 402,720.02 × 91,113.10
  4. Step 4: Simplify right side
    268,481.22x = 36,693,069,454.26
  5. Step 5: Solve for x
    x = 36,693,069,454.26/268,481.22
  6. Step 6: Final answer
    x = 136,669.04

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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.