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Finding the Fourth Proportional to 262,078.20, 392,922.90 and 112,195.80

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Solution

The fourth proportional to 262,078.20, 392,922.90 and 112,195.80 is: 168,210.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,078.20 : 392,922.90 = 112,195.80 : x
  2. Step 2: Convert to fraction form
    262,078.20/392,922.90 = 112,195.80/x
  3. Step 3: Cross multiply
    262,078.20x = 392,922.90 × 112,195.80
  4. Step 4: Simplify right side
    262,078.20x = 44,084,299,103.82
  5. Step 5: Solve for x
    x = 44,084,299,103.82/262,078.20
  6. Step 6: Final answer
    x = 168,210.48

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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.