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Finding the Fourth Proportional to 171,887.80, 257,831.70 and 162,046.30

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Solution

The fourth proportional to 171,887.80, 257,831.70 and 162,046.30 is: 243,069.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,887.80 : 257,831.70 = 162,046.30 : x
  2. Step 2: Convert to fraction form
    171,887.80/257,831.70 = 162,046.30/x
  3. Step 3: Cross multiply
    171,887.80x = 257,831.70 × 162,046.30
  4. Step 4: Simplify right side
    171,887.80x = 41,780,673,007.71
  5. Step 5: Solve for x
    x = 41,780,673,007.71/171,887.80
  6. Step 6: Final answer
    x = 243,069.45

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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.