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Finding the Fourth Proportional to 371,052.26, 512,052.30 and 209,903.90

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Solution

The fourth proportional to 371,052.26, 512,052.30 and 209,903.90 is: 289,667.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,052.26 : 512,052.30 = 209,903.90 : x
  2. Step 2: Convert to fraction form
    371,052.26/512,052.30 = 209,903.90/x
  3. Step 3: Cross multiply
    371,052.26x = 512,052.30 × 209,903.90
  4. Step 4: Simplify right side
    371,052.26x = 107,481,774,773.97
  5. Step 5: Solve for x
    x = 107,481,774,773.97/371,052.26
  6. Step 6: Final answer
    x = 289,667.48

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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.