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Finding the Fourth Proportional to 265,911.17, 398,870.25 and 88,418.19

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Solution

The fourth proportional to 265,911.17, 398,870.25 and 88,418.19 is: 132,628.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,911.17 : 398,870.25 = 88,418.19 : x
  2. Step 2: Convert to fraction form
    265,911.17/398,870.25 = 88,418.19/x
  3. Step 3: Cross multiply
    265,911.17x = 398,870.25 × 88,418.19
  4. Step 4: Simplify right side
    265,911.17x = 35,267,385,107.76
  5. Step 5: Solve for x
    x = 35,267,385,107.76/265,911.17
  6. Step 6: Final answer
    x = 132,628.45

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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.