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Finding the Fourth Proportional to 265,112.16, 397,729.74 and 87,608.40

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Solution

The fourth proportional to 265,112.16, 397,729.74 and 87,608.40 is: 131,432.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,112.16 : 397,729.74 = 87,608.40 : x
  2. Step 2: Convert to fraction form
    265,112.16/397,729.74 = 87,608.40/x
  3. Step 3: Cross multiply
    265,112.16x = 397,729.74 × 87,608.40
  4. Step 4: Simplify right side
    265,112.16x = 34,844,466,153.82
  5. Step 5: Solve for x
    x = 34,844,466,153.82/265,112.16
  6. Step 6: Final answer
    x = 131,432.92

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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.