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Finding the Fourth Proportional to 425,871.28, 587,705.16 and 234,889.84

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Solution

The fourth proportional to 425,871.28, 587,705.16 and 234,889.84 is: 324,149.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,871.28 : 587,705.16 = 234,889.84 : x
  2. Step 2: Convert to fraction form
    425,871.28/587,705.16 = 234,889.84/x
  3. Step 3: Cross multiply
    425,871.28x = 587,705.16 × 234,889.84
  4. Step 4: Simplify right side
    425,871.28x = 138,045,970,999.57
  5. Step 5: Solve for x
    x = 138,045,970,999.57/425,871.28
  6. Step 6: Final answer
    x = 324,149.52

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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.