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Finding the Fourth Proportional to 381,396.60, 571,922.10 and 144,660.60

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Solution

The fourth proportional to 381,396.60, 571,922.10 and 144,660.60 is: 216,925.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,396.60 : 571,922.10 = 144,660.60 : x
  2. Step 2: Convert to fraction form
    381,396.60/571,922.10 = 144,660.60/x
  3. Step 3: Cross multiply
    381,396.60x = 571,922.10 × 144,660.60
  4. Step 4: Simplify right side
    381,396.60x = 82,734,594,139.26
  5. Step 5: Solve for x
    x = 82,734,594,139.26/381,396.60
  6. Step 6: Final answer
    x = 216,925.36

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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.