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Finding the Fourth Proportional to 425,765.44, 638,462.72 and 122,092.50

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Solution

The fourth proportional to 425,765.44, 638,462.72 and 122,092.50 is: 183,085.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,765.44 : 638,462.72 = 122,092.50 : x
  2. Step 2: Convert to fraction form
    425,765.44/638,462.72 = 122,092.50/x
  3. Step 3: Cross multiply
    425,765.44x = 638,462.72 × 122,092.50
  4. Step 4: Simplify right side
    425,765.44x = 77,951,509,641.60
  5. Step 5: Solve for x
    x = 77,951,509,641.60/425,765.44
  6. Step 6: Final answer
    x = 183,085.57

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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.