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Finding the Fourth Proportional to 298,619.70, 447,929.55 and 132,407.70

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Solution

The fourth proportional to 298,619.70, 447,929.55 and 132,407.70 is: 198,611.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,619.70 : 447,929.55 = 132,407.70 : x
  2. Step 2: Convert to fraction form
    298,619.70/447,929.55 = 132,407.70/x
  3. Step 3: Cross multiply
    298,619.70x = 447,929.55 × 132,407.70
  4. Step 4: Simplify right side
    298,619.70x = 59,309,321,477.54
  5. Step 5: Solve for x
    x = 59,309,321,477.54/298,619.70
  6. Step 6: Final answer
    x = 198,611.55

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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.