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Finding the Fourth Proportional to 288,759.30, 398,476.38 and 159,689.38

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Solution

The fourth proportional to 288,759.30, 398,476.38 and 159,689.38 is: 220,365.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,759.30 : 398,476.38 = 159,689.38 : x
  2. Step 2: Convert to fraction form
    288,759.30/398,476.38 = 159,689.38/x
  3. Step 3: Cross multiply
    288,759.30x = 398,476.38 × 159,689.38
  4. Step 4: Simplify right side
    288,759.30x = 63,632,446,066.84
  5. Step 5: Solve for x
    x = 63,632,446,066.84/288,759.30
  6. Step 6: Final answer
    x = 220,365.01

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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.