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Finding the Fourth Proportional to 288,196.20, 432,550.30 and 169,719.40

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Solution

The fourth proportional to 288,196.20, 432,550.30 and 169,719.40 is: 254,729.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,196.20 : 432,550.30 = 169,719.40 : x
  2. Step 2: Convert to fraction form
    288,196.20/432,550.30 = 169,719.40/x
  3. Step 3: Cross multiply
    288,196.20x = 432,550.30 × 169,719.40
  4. Step 4: Simplify right side
    288,196.20x = 73,412,177,385.82
  5. Step 5: Solve for x
    x = 73,412,177,385.82/288,196.20
  6. Step 6: Final answer
    x = 254,729.86

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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.