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Finding the Fourth Proportional to 288,995.32, 398,819.28 and 174,273.40

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Solution

The fourth proportional to 288,995.32, 398,819.28 and 174,273.40 is: 240,500.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,995.32 : 398,819.28 = 174,273.40 : x
  2. Step 2: Convert to fraction form
    288,995.32/398,819.28 = 174,273.40/x
  3. Step 3: Cross multiply
    288,995.32x = 398,819.28 × 174,273.40
  4. Step 4: Simplify right side
    288,995.32x = 69,503,591,911.15
  5. Step 5: Solve for x
    x = 69,503,591,911.15/288,995.32
  6. Step 6: Final answer
    x = 240,500.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.