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Finding the Fourth Proportional to 288,695.28, 398,383.35 and 159,626.30

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Solution

The fourth proportional to 288,695.28, 398,383.35 and 159,626.30 is: 220,275.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,695.28 : 398,383.35 = 159,626.30 : x
  2. Step 2: Convert to fraction form
    288,695.28/398,383.35 = 159,626.30/x
  3. Step 3: Cross multiply
    288,695.28x = 398,383.35 × 159,626.30
  4. Step 4: Simplify right side
    288,695.28x = 63,592,458,150.19
  5. Step 5: Solve for x
    x = 63,592,458,150.19/288,695.28
  6. Step 6: Final answer
    x = 220,275.36

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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.