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Finding the Fourth Proportional to 648,132.60, 972,198.90 and 174,865.80

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Solution

The fourth proportional to 648,132.60, 972,198.90 and 174,865.80 is: 262,298.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,132.60 : 972,198.90 = 174,865.80 : x
  2. Step 2: Convert to fraction form
    648,132.60/972,198.90 = 174,865.80/x
  3. Step 3: Cross multiply
    648,132.60x = 972,198.90 × 174,865.80
  4. Step 4: Simplify right side
    648,132.60x = 170,004,338,407.62
  5. Step 5: Solve for x
    x = 170,004,338,407.62/648,132.60
  6. Step 6: Final answer
    x = 262,298.70

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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.