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Finding the Fourth Proportional to 169,667.20, 254,209.20 and 143,423.20

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Solution

The fourth proportional to 169,667.20, 254,209.20 and 143,423.20 is: 214,888.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,667.20 : 254,209.20 = 143,423.20 : x
  2. Step 2: Convert to fraction form
    169,667.20/254,209.20 = 143,423.20/x
  3. Step 3: Cross multiply
    169,667.20x = 254,209.20 × 143,423.20
  4. Step 4: Simplify right side
    169,667.20x = 36,459,496,933.44
  5. Step 5: Solve for x
    x = 36,459,496,933.44/169,667.20
  6. Step 6: Final answer
    x = 214,888.30

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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.