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Finding the Fourth Proportional to 170,987.20, 256,480.80 and 162,822.40

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Solution

The fourth proportional to 170,987.20, 256,480.80 and 162,822.40 is: 244,233.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,987.20 : 256,480.80 = 162,822.40 : x
  2. Step 2: Convert to fraction form
    170,987.20/256,480.80 = 162,822.40/x
  3. Step 3: Cross multiply
    170,987.20x = 256,480.80 × 162,822.40
  4. Step 4: Simplify right side
    170,987.20x = 41,760,819,409.92
  5. Step 5: Solve for x
    x = 41,760,819,409.92/170,987.20
  6. Step 6: Final answer
    x = 244,233.60

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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.