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Finding the Fourth Proportional to 288,993.52, 398,891.28 and 168,158.23

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Solution

The fourth proportional to 288,993.52, 398,891.28 and 168,158.23 is: 232,105.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,993.52 : 398,891.28 = 168,158.23 : x
  2. Step 2: Convert to fraction form
    288,993.52/398,891.28 = 168,158.23/x
  3. Step 3: Cross multiply
    288,993.52x = 398,891.28 × 168,158.23
  4. Step 4: Simplify right side
    288,993.52x = 67,076,851,607.23
  5. Step 5: Solve for x
    x = 67,076,851,607.23/288,993.52
  6. Step 6: Final answer
    x = 232,105.04

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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.