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Finding the Fourth Proportional to 321,858.72, 482,788.08 and 100,260

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Solution

The fourth proportional to 321,858.72, 482,788.08 and 100,260 is: 150,390.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,858.72 : 482,788.08 = 100,260 : x
  2. Step 2: Convert to fraction form
    321,858.72/482,788.08 = 100,260/x
  3. Step 3: Cross multiply
    321,858.72x = 482,788.08 × 100,260
  4. Step 4: Simplify right side
    321,858.72x = 48,404,332,900.80
  5. Step 5: Solve for x
    x = 48,404,332,900.80/321,858.72
  6. Step 6: Final answer
    x = 150,390.00

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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.