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Finding the Fourth Proportional to 170,744.20, 256,116.30 and 153,831.40

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Solution

The fourth proportional to 170,744.20, 256,116.30 and 153,831.40 is: 230,747.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,744.20 : 256,116.30 = 153,831.40 : x
  2. Step 2: Convert to fraction form
    170,744.20/256,116.30 = 153,831.40/x
  3. Step 3: Cross multiply
    170,744.20x = 256,116.30 × 153,831.40
  4. Step 4: Simplify right side
    170,744.20x = 39,398,728,991.82
  5. Step 5: Solve for x
    x = 39,398,728,991.82/170,744.20
  6. Step 6: Final answer
    x = 230,747.10

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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.