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Finding the Fourth Proportional to 387,560.74, 581,211.78 and 162,879.31

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Solution

The fourth proportional to 387,560.74, 581,211.78 and 162,879.31 is: 244,264.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,560.74 : 581,211.78 = 162,879.31 : x
  2. Step 2: Convert to fraction form
    387,560.74/581,211.78 = 162,879.31/x
  3. Step 3: Cross multiply
    387,560.74x = 581,211.78 × 162,879.31
  4. Step 4: Simplify right side
    387,560.74x = 94,667,373,690.27
  5. Step 5: Solve for x
    x = 94,667,373,690.27/387,560.74
  6. Step 6: Final answer
    x = 244,264.61

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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.