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Finding the Fourth Proportional to 169,488.20, 254,232.30 and 43,128.20

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Solution

The fourth proportional to 169,488.20, 254,232.30 and 43,128.20 is: 64,692.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,488.20 : 254,232.30 = 43,128.20 : x
  2. Step 2: Convert to fraction form
    169,488.20/254,232.30 = 43,128.20/x
  3. Step 3: Cross multiply
    169,488.20x = 254,232.30 × 43,128.20
  4. Step 4: Simplify right side
    169,488.20x = 10,964,581,480.86
  5. Step 5: Solve for x
    x = 10,964,581,480.86/169,488.20
  6. Step 6: Final answer
    x = 64,692.30

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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.