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Finding the Fourth Proportional to 265,718.40, 398,810.88 and 147,523.20

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Solution

The fourth proportional to 265,718.40, 398,810.88 and 147,523.20 is: 221,414.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,718.40 : 398,810.88 = 147,523.20 : x
  2. Step 2: Convert to fraction form
    265,718.40/398,810.88 = 147,523.20/x
  3. Step 3: Cross multiply
    265,718.40x = 398,810.88 × 147,523.20
  4. Step 4: Simplify right side
    265,718.40x = 58,833,857,212.42
  5. Step 5: Solve for x
    x = 58,833,857,212.42/265,718.40
  6. Step 6: Final answer
    x = 221,414.31

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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.