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Finding the Fourth Proportional to 320,441.20, 480,143.40 and 201,900.40

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Solution

The fourth proportional to 320,441.20, 480,143.40 and 201,900.40 is: 302,523.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,441.20 : 480,143.40 = 201,900.40 : x
  2. Step 2: Convert to fraction form
    320,441.20/480,143.40 = 201,900.40/x
  3. Step 3: Cross multiply
    320,441.20x = 480,143.40 × 201,900.40
  4. Step 4: Simplify right side
    320,441.20x = 96,941,144,517.36
  5. Step 5: Solve for x
    x = 96,941,144,517.36/320,441.20
  6. Step 6: Final answer
    x = 302,523.97

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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.