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Finding the Fourth Proportional to 262,138.20, 393,498.90 and 144,040.20

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Solution

The fourth proportional to 262,138.20, 393,498.90 and 144,040.20 is: 216,220.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,138.20 : 393,498.90 = 144,040.20 : x
  2. Step 2: Convert to fraction form
    262,138.20/393,498.90 = 144,040.20/x
  3. Step 3: Cross multiply
    262,138.20x = 393,498.90 × 144,040.20
  4. Step 4: Simplify right side
    262,138.20x = 56,679,660,255.78
  5. Step 5: Solve for x
    x = 56,679,660,255.78/262,138.20
  6. Step 6: Final answer
    x = 216,220.53

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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.