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Finding the Fourth Proportional to 186,616.80, 279,925.20 and 170,287.20

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Solution

The fourth proportional to 186,616.80, 279,925.20 and 170,287.20 is: 255,430.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,616.80 : 279,925.20 = 170,287.20 : x
  2. Step 2: Convert to fraction form
    186,616.80/279,925.20 = 170,287.20/x
  3. Step 3: Cross multiply
    186,616.80x = 279,925.20 × 170,287.20
  4. Step 4: Simplify right side
    186,616.80x = 47,667,678,517.44
  5. Step 5: Solve for x
    x = 47,667,678,517.44/186,616.80
  6. Step 6: Final answer
    x = 255,430.80

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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.