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Finding the Fourth Proportional to 630,725.46, 946,212.78 and 231,369.90

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Solution

The fourth proportional to 630,725.46, 946,212.78 and 231,369.90 is: 347,100.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,725.46 : 946,212.78 = 231,369.90 : x
  2. Step 2: Convert to fraction form
    630,725.46/946,212.78 = 231,369.90/x
  3. Step 3: Cross multiply
    630,725.46x = 946,212.78 × 231,369.90
  4. Step 4: Simplify right side
    630,725.46x = 218,925,156,287.32
  5. Step 5: Solve for x
    x = 218,925,156,287.32/630,725.46
  6. Step 6: Final answer
    x = 347,100.55

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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.