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Finding the Fourth Proportional to 265,866.64, 398,666.70 and 88,311.40

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Solution

The fourth proportional to 265,866.64, 398,666.70 and 88,311.40 is: 132,422.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,866.64 : 398,666.70 = 88,311.40 : x
  2. Step 2: Convert to fraction form
    265,866.64/398,666.70 = 88,311.40/x
  3. Step 3: Cross multiply
    265,866.64x = 398,666.70 × 88,311.40
  4. Step 4: Simplify right side
    265,866.64x = 35,206,814,410.38
  5. Step 5: Solve for x
    x = 35,206,814,410.38/265,866.64
  6. Step 6: Final answer
    x = 132,422.84

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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.