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Finding the Fourth Proportional to 268,339.22, 402,559.86 and 90,798.56

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Solution

The fourth proportional to 268,339.22, 402,559.86 and 90,798.56 is: 136,215.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,339.22 : 402,559.86 = 90,798.56 : x
  2. Step 2: Convert to fraction form
    268,339.22/402,559.86 = 90,798.56/x
  3. Step 3: Cross multiply
    268,339.22x = 402,559.86 × 90,798.56
  4. Step 4: Simplify right side
    268,339.22x = 36,551,856,948.70
  5. Step 5: Solve for x
    x = 36,551,856,948.70/268,339.22
  6. Step 6: Final answer
    x = 136,215.11

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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.