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Finding the Fourth Proportional to 408,047.20, 612,070.80 and 275,336.80

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Solution

The fourth proportional to 408,047.20, 612,070.80 and 275,336.80 is: 413,005.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,047.20 : 612,070.80 = 275,336.80 : x
  2. Step 2: Convert to fraction form
    408,047.20/612,070.80 = 275,336.80/x
  3. Step 3: Cross multiply
    408,047.20x = 612,070.80 × 275,336.80
  4. Step 4: Simplify right side
    408,047.20x = 168,525,615,445.44
  5. Step 5: Solve for x
    x = 168,525,615,445.44/408,047.20
  6. Step 6: Final answer
    x = 413,005.20

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1.5x scale

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.