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Finding the Fourth Proportional to 492,791.76, 739,278.87 and 155,917.22

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Solution

The fourth proportional to 492,791.76, 739,278.87 and 155,917.22 is: 233,904.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,791.76 : 739,278.87 = 155,917.22 : x
  2. Step 2: Convert to fraction form
    492,791.76/739,278.87 = 155,917.22/x
  3. Step 3: Cross multiply
    492,791.76x = 739,278.87 × 155,917.22
  4. Step 4: Simplify right side
    492,791.76x = 115,266,302,518.75
  5. Step 5: Solve for x
    x = 115,266,302,518.75/492,791.76
  6. Step 6: Final answer
    x = 233,904.69

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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.