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Finding the Fourth Proportional to 371,209.72, 512,266.42 and 201,443.84

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Solution

The fourth proportional to 371,209.72, 512,266.42 and 201,443.84 is: 277,990.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,209.72 : 512,266.42 = 201,443.84 : x
  2. Step 2: Convert to fraction form
    371,209.72/512,266.42 = 201,443.84/x
  3. Step 3: Cross multiply
    371,209.72x = 512,266.42 × 201,443.84
  4. Step 4: Simplify right side
    371,209.72x = 103,192,915,524.91
  5. Step 5: Solve for x
    x = 103,192,915,524.91/371,209.72
  6. Step 6: Final answer
    x = 277,990.88

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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.