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Finding the Fourth Proportional to 408,847.80, 613,271.70 and 372,106.20

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Solution

The fourth proportional to 408,847.80, 613,271.70 and 372,106.20 is: 558,159.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,847.80 : 613,271.70 = 372,106.20 : x
  2. Step 2: Convert to fraction form
    408,847.80/613,271.70 = 372,106.20/x
  3. Step 3: Cross multiply
    408,847.80x = 613,271.70 × 372,106.20
  4. Step 4: Simplify right side
    408,847.80x = 228,202,201,854.54
  5. Step 5: Solve for x
    x = 228,202,201,854.54/408,847.80
  6. Step 6: Final answer
    x = 558,159.30

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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.