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Finding the Fourth Proportional to 220,649.55, 304,472.01 and 123,831.20

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Solution

The fourth proportional to 220,649.55, 304,472.01 and 123,831.20 is: 170,873.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,649.55 : 304,472.01 = 123,831.20 : x
  2. Step 2: Convert to fraction form
    220,649.55/304,472.01 = 123,831.20/x
  3. Step 3: Cross multiply
    220,649.55x = 304,472.01 × 123,831.20
  4. Step 4: Simplify right side
    220,649.55x = 37,703,132,842.35
  5. Step 5: Solve for x
    x = 37,703,132,842.35/220,649.55
  6. Step 6: Final answer
    x = 170,873.38

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1.5x scale

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.