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Finding the Fourth Proportional to 288,743.70, 398,454.87 and 159,673.79

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Solution

The fourth proportional to 288,743.70, 398,454.87 and 159,673.79 is: 220,343.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,743.70 : 398,454.87 = 159,673.79 : x
  2. Step 2: Convert to fraction form
    288,743.70/398,454.87 = 159,673.79/x
  3. Step 3: Cross multiply
    288,743.70x = 398,454.87 × 159,673.79
  4. Step 4: Simplify right side
    288,743.70x = 63,622,799,236.86
  5. Step 5: Solve for x
    x = 63,622,799,236.86/288,743.70
  6. Step 6: Final answer
    x = 220,343.51

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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.