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Finding the Fourth Proportional to 436,273.76, 654,391.60 and 136,747.50

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Solution

The fourth proportional to 436,273.76, 654,391.60 and 136,747.50 is: 205,115.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,273.76 : 654,391.60 = 136,747.50 : x
  2. Step 2: Convert to fraction form
    436,273.76/654,391.60 = 136,747.50/x
  3. Step 3: Cross multiply
    436,273.76x = 654,391.60 × 136,747.50
  4. Step 4: Simplify right side
    436,273.76x = 89,486,415,321
  5. Step 5: Solve for x
    x = 89,486,415,321/436,273.76
  6. Step 6: Final answer
    x = 205,115.28

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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.