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Finding the Fourth Proportional to 265,412.20, 398,118.30 and 87,946.60

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Solution

The fourth proportional to 265,412.20, 398,118.30 and 87,946.60 is: 131,919.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,412.20 : 398,118.30 = 87,946.60 : x
  2. Step 2: Convert to fraction form
    265,412.20/398,118.30 = 87,946.60/x
  3. Step 3: Cross multiply
    265,412.20x = 398,118.30 × 87,946.60
  4. Step 4: Simplify right side
    265,412.20x = 35,013,150,882.78
  5. Step 5: Solve for x
    x = 35,013,150,882.78/265,412.20
  6. Step 6: Final answer
    x = 131,919.90

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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.