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Finding the Fourth Proportional to 325,408.20, 488,549.70 and 207,601.80

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Solution

The fourth proportional to 325,408.20, 488,549.70 and 207,601.80 is: 311,681.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,408.20 : 488,549.70 = 207,601.80 : x
  2. Step 2: Convert to fraction form
    325,408.20/488,549.70 = 207,601.80/x
  3. Step 3: Cross multiply
    325,408.20x = 488,549.70 × 207,601.80
  4. Step 4: Simplify right side
    325,408.20x = 101,423,797,109.46
  5. Step 5: Solve for x
    x = 101,423,797,109.46/325,408.20
  6. Step 6: Final answer
    x = 311,681.75

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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.