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Finding the Fourth Proportional to 288,468.54, 398,110.55 and 159,432.21

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Solution

The fourth proportional to 288,468.54, 398,110.55 and 159,432.21 is: 220,029.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,468.54 : 398,110.55 = 159,432.21 : x
  2. Step 2: Convert to fraction form
    288,468.54/398,110.55 = 159,432.21/x
  3. Step 3: Cross multiply
    288,468.54x = 398,110.55 × 159,432.21
  4. Step 4: Simplify right side
    288,468.54x = 63,471,643,716.48
  5. Step 5: Solve for x
    x = 63,471,643,716.48/288,468.54
  6. Step 6: Final answer
    x = 220,029.69

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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.