Home / 648,147.20-972,220.80-227,465.60

Finding the Fourth Proportional to 648,147.20, 972,220.80 and 227,465.60

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Solution

The fourth proportional to 648,147.20, 972,220.80 and 227,465.60 is: 341,198.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,147.20 : 972,220.80 = 227,465.60 : x
  2. Step 2: Convert to fraction form
    648,147.20/972,220.80 = 227,465.60/x
  3. Step 3: Cross multiply
    648,147.20x = 972,220.80 × 227,465.60
  4. Step 4: Simplify right side
    648,147.20x = 221,146,787,604.48
  5. Step 5: Solve for x
    x = 221,146,787,604.48/648,147.20
  6. Step 6: Final answer
    x = 341,198.40

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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.