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Finding the Fourth Proportional to 354,831.20, 532,246.80 and 105,480.80

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Solution

The fourth proportional to 354,831.20, 532,246.80 and 105,480.80 is: 158,221.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,831.20 : 532,246.80 = 105,480.80 : x
  2. Step 2: Convert to fraction form
    354,831.20/532,246.80 = 105,480.80/x
  3. Step 3: Cross multiply
    354,831.20x = 532,246.80 × 105,480.80
  4. Step 4: Simplify right side
    354,831.20x = 56,141,818,261.44
  5. Step 5: Solve for x
    x = 56,141,818,261.44/354,831.20
  6. Step 6: Final answer
    x = 158,221.20

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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.