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Finding the Fourth Proportional to 265,338.90, 398,060.87 and 75,800.90

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Solution

The fourth proportional to 265,338.90, 398,060.87 and 75,800.90 is: 113,716.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,338.90 : 398,060.87 = 75,800.90 : x
  2. Step 2: Convert to fraction form
    265,338.90/398,060.87 = 75,800.90/x
  3. Step 3: Cross multiply
    265,338.90x = 398,060.87 × 75,800.90
  4. Step 4: Simplify right side
    265,338.90x = 30,173,369,831.47
  5. Step 5: Solve for x
    x = 30,173,369,831.47/265,338.90
  6. Step 6: Final answer
    x = 113,716.34

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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.