Home / 648,127.20-972,190.80-227,445.60

Finding the Fourth Proportional to 648,127.20, 972,190.80 and 227,445.60

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Solution

The fourth proportional to 648,127.20, 972,190.80 and 227,445.60 is: 341,168.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,127.20 : 972,190.80 = 227,445.60 : x
  2. Step 2: Convert to fraction form
    648,127.20/972,190.80 = 227,445.60/x
  3. Step 3: Cross multiply
    648,127.20x = 972,190.80 × 227,445.60
  4. Step 4: Simplify right side
    648,127.20x = 221,120,519,820.48
  5. Step 5: Solve for x
    x = 221,120,519,820.48/648,127.20
  6. Step 6: Final answer
    x = 341,168.40

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Double scale
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Similar ratio
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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.