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Finding the Fourth Proportional to 265,868.64, 398,669.70 and 88,313.40

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Solution

The fourth proportional to 265,868.64, 398,669.70 and 88,313.40 is: 132,425.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,868.64 : 398,669.70 = 88,313.40 : x
  2. Step 2: Convert to fraction form
    265,868.64/398,669.70 = 88,313.40/x
  3. Step 3: Cross multiply
    265,868.64x = 398,669.70 × 88,313.40
  4. Step 4: Simplify right side
    265,868.64x = 35,207,876,683.98
  5. Step 5: Solve for x
    x = 35,207,876,683.98/265,868.64
  6. Step 6: Final answer
    x = 132,425.84

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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.