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Finding the Fourth Proportional to 288,590.20, 398,253.54 and 161,265.76

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Solution

The fourth proportional to 288,590.20, 398,253.54 and 161,265.76 is: 222,546.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,590.20 : 398,253.54 = 161,265.76 : x
  2. Step 2: Convert to fraction form
    288,590.20/398,253.54 = 161,265.76/x
  3. Step 3: Cross multiply
    288,590.20x = 398,253.54 × 161,265.76
  4. Step 4: Simplify right side
    288,590.20x = 64,224,659,800.79
  5. Step 5: Solve for x
    x = 64,224,659,800.79/288,590.20
  6. Step 6: Final answer
    x = 222,546.23

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1.5x scale

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.