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Finding the Fourth Proportional to 262,240.40, 393,360.60 and 75,270.80

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Solution

The fourth proportional to 262,240.40, 393,360.60 and 75,270.80 is: 112,906.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,240.40 : 393,360.60 = 75,270.80 : x
  2. Step 2: Convert to fraction form
    262,240.40/393,360.60 = 75,270.80/x
  3. Step 3: Cross multiply
    262,240.40x = 393,360.60 × 75,270.80
  4. Step 4: Simplify right side
    262,240.40x = 29,608,567,050.48
  5. Step 5: Solve for x
    x = 29,608,567,050.48/262,240.40
  6. Step 6: Final answer
    x = 112,906.20

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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.