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Finding the Fourth Proportional to 265,863.64, 398,662.20 and 88,308.40

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Solution

The fourth proportional to 265,863.64, 398,662.20 and 88,308.40 is: 132,418.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,863.64 : 398,662.20 = 88,308.40 : x
  2. Step 2: Convert to fraction form
    265,863.64/398,662.20 = 88,308.40/x
  3. Step 3: Cross multiply
    265,863.64x = 398,662.20 × 88,308.40
  4. Step 4: Simplify right side
    265,863.64x = 35,205,221,022.48
  5. Step 5: Solve for x
    x = 35,205,221,022.48/265,863.64
  6. Step 6: Final answer
    x = 132,418.34

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1.5x scale

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.