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Finding the Fourth Proportional to 223,079.87, 307,831.16 and 127,571.15

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Solution

The fourth proportional to 223,079.87, 307,831.16 and 127,571.15 is: 176,037.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,079.87 : 307,831.16 = 127,571.15 : x
  2. Step 2: Convert to fraction form
    223,079.87/307,831.16 = 127,571.15/x
  3. Step 3: Cross multiply
    223,079.87x = 307,831.16 × 127,571.15
  4. Step 4: Simplify right side
    223,079.87x = 39,270,372,910.02
  5. Step 5: Solve for x
    x = 39,270,372,910.02/223,079.87
  6. Step 6: Final answer
    x = 176,037.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.