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Finding the Fourth Proportional to 483,143.40, 724,715.10 and 303,517.80

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Solution

The fourth proportional to 483,143.40, 724,715.10 and 303,517.80 is: 455,276.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,143.40 : 724,715.10 = 303,517.80 : x
  2. Step 2: Convert to fraction form
    483,143.40/724,715.10 = 303,517.80/x
  3. Step 3: Cross multiply
    483,143.40x = 724,715.10 × 303,517.80
  4. Step 4: Simplify right side
    483,143.40x = 219,963,932,778.78
  5. Step 5: Solve for x
    x = 219,963,932,778.78/483,143.40
  6. Step 6: Final answer
    x = 455,276.70

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Similar ratio
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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.