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Finding the Fourth Proportional to 265,718.40, 398,490.88 and 88,177.72

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Solution

The fourth proportional to 265,718.40, 398,490.88 and 88,177.72 is: 132,237.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,718.40 : 398,490.88 = 88,177.72 : x
  2. Step 2: Convert to fraction form
    265,718.40/398,490.88 = 88,177.72/x
  3. Step 3: Cross multiply
    265,718.40x = 398,490.88 × 88,177.72
  4. Step 4: Simplify right side
    265,718.40x = 35,138,017,239.19
  5. Step 5: Solve for x
    x = 35,138,017,239.19/265,718.40
  6. Step 6: Final answer
    x = 132,237.80

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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.