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Finding the Fourth Proportional to 371,340.62, 512,469.88 and 210,231.62

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Solution

The fourth proportional to 371,340.62, 512,469.88 and 210,231.62 is: 290,130.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,340.62 : 512,469.88 = 210,231.62 : x
  2. Step 2: Convert to fraction form
    371,340.62/512,469.88 = 210,231.62/x
  3. Step 3: Cross multiply
    371,340.62x = 512,469.88 × 210,231.62
  4. Step 4: Simplify right side
    371,340.62x = 107,737,373,073.61
  5. Step 5: Solve for x
    x = 107,737,373,073.61/371,340.62
  6. Step 6: Final answer
    x = 290,130.86

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1.5x scale

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.