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Finding the Fourth Proportional to 367,321.80, 506,916.78 and 203,981.05

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Solution

The fourth proportional to 367,321.80, 506,916.78 and 203,981.05 is: 281,500.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,321.80 : 506,916.78 = 203,981.05 : x
  2. Step 2: Convert to fraction form
    367,321.80/506,916.78 = 203,981.05/x
  3. Step 3: Cross multiply
    367,321.80x = 506,916.78 × 203,981.05
  4. Step 4: Simplify right side
    367,321.80x = 103,401,416,915.74
  5. Step 5: Solve for x
    x = 103,401,416,915.74/367,321.80
  6. Step 6: Final answer
    x = 281,500.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.