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Finding the Fourth Proportional to 438,746.40, 658,119.60 and 261,453.60

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Solution

The fourth proportional to 438,746.40, 658,119.60 and 261,453.60 is: 392,180.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,746.40 : 658,119.60 = 261,453.60 : x
  2. Step 2: Convert to fraction form
    438,746.40/658,119.60 = 261,453.60/x
  3. Step 3: Cross multiply
    438,746.40x = 658,119.60 × 261,453.60
  4. Step 4: Simplify right side
    438,746.40x = 172,067,738,650.56
  5. Step 5: Solve for x
    x = 172,067,738,650.56/438,746.40
  6. Step 6: Final answer
    x = 392,180.40

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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.