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Finding the Fourth Proportional to 265,871.40, 398,922.30 and 125,557.80

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Solution

The fourth proportional to 265,871.40, 398,922.30 and 125,557.80 is: 188,391.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,871.40 : 398,922.30 = 125,557.80 : x
  2. Step 2: Convert to fraction form
    265,871.40/398,922.30 = 125,557.80/x
  3. Step 3: Cross multiply
    265,871.40x = 398,922.30 × 125,557.80
  4. Step 4: Simplify right side
    265,871.40x = 50,087,806,358.94
  5. Step 5: Solve for x
    x = 50,087,806,358.94/265,871.40
  6. Step 6: Final answer
    x = 188,391.10

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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.