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Finding the Fourth Proportional to 439,358.40, 658,843.20 and 202,579.20

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Solution

The fourth proportional to 439,358.40, 658,843.20 and 202,579.20 is: 303,779.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,358.40 : 658,843.20 = 202,579.20 : x
  2. Step 2: Convert to fraction form
    439,358.40/658,843.20 = 202,579.20/x
  3. Step 3: Cross multiply
    439,358.40x = 658,843.20 × 202,579.20
  4. Step 4: Simplify right side
    439,358.40x = 133,467,928,381.44
  5. Step 5: Solve for x
    x = 133,467,928,381.44/439,358.40
  6. Step 6: Final answer
    x = 303,779.17

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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.