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Finding the Fourth Proportional to 265,411.24, 398,173.02 and 87,908.20

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Solution

The fourth proportional to 265,411.24, 398,173.02 and 87,908.20 is: 131,880.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,411.24 : 398,173.02 = 87,908.20 : x
  2. Step 2: Convert to fraction form
    265,411.24/398,173.02 = 87,908.20/x
  3. Step 3: Cross multiply
    265,411.24x = 398,173.02 × 87,908.20
  4. Step 4: Simplify right side
    265,411.24x = 35,002,673,476.76
  5. Step 5: Solve for x
    x = 35,002,673,476.76/265,411.24
  6. Step 6: Final answer
    x = 131,880.90

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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.