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Finding the Fourth Proportional to 324,325.20, 485,175.60 and 284,959.20

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Solution

The fourth proportional to 324,325.20, 485,175.60 and 284,959.20 is: 426,285.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,325.20 : 485,175.60 = 284,959.20 : x
  2. Step 2: Convert to fraction form
    324,325.20/485,175.60 = 284,959.20/x
  3. Step 3: Cross multiply
    324,325.20x = 485,175.60 × 284,959.20
  4. Step 4: Simplify right side
    324,325.20x = 138,255,250,835.52
  5. Step 5: Solve for x
    x = 138,255,250,835.52/324,325.20
  6. Step 6: Final answer
    x = 426,285.87

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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.