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Finding the Fourth Proportional to 408,373.19, 612,588.94 and 108,852.20

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Solution

The fourth proportional to 408,373.19, 612,588.94 and 108,852.20 is: 163,286.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,373.19 : 612,588.94 = 108,852.20 : x
  2. Step 2: Convert to fraction form
    408,373.19/612,588.94 = 108,852.20/x
  3. Step 3: Cross multiply
    408,373.19x = 612,588.94 × 108,852.20
  4. Step 4: Simplify right side
    408,373.19x = 66,681,650,479.59
  5. Step 5: Solve for x
    x = 66,681,650,479.59/408,373.19
  6. Step 6: Final answer
    x = 163,286.07

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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.