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Finding the Fourth Proportional to 218,695.10, 328,042.51 and 168,847.97

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Solution

The fourth proportional to 218,695.10, 328,042.51 and 168,847.97 is: 253,271.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,695.10 : 328,042.51 = 168,847.97 : x
  2. Step 2: Convert to fraction form
    218,695.10/328,042.51 = 168,847.97/x
  3. Step 3: Cross multiply
    218,695.10x = 328,042.51 × 168,847.97
  4. Step 4: Simplify right side
    218,695.10x = 55,389,311,887.20
  5. Step 5: Solve for x
    x = 55,389,311,887.20/218,695.10
  6. Step 6: Final answer
    x = 253,271.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.