Home / 205,048.20-307,649.10-80,478.60

Finding the Fourth Proportional to 205,048.20, 307,649.10 and 80,478.60

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Solution

The fourth proportional to 205,048.20, 307,649.10 and 80,478.60 is: 120,748.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,048.20 : 307,649.10 = 80,478.60 : x
  2. Step 2: Convert to fraction form
    205,048.20/307,649.10 = 80,478.60/x
  3. Step 3: Cross multiply
    205,048.20x = 307,649.10 × 80,478.60
  4. Step 4: Simplify right side
    205,048.20x = 24,759,168,859.26
  5. Step 5: Solve for x
    x = 24,759,168,859.26/205,048.20
  6. Step 6: Final answer
    x = 120,748.04

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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.