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Finding the Fourth Proportional to 387,346.67, 581,053.47 and 106,863.92

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Solution

The fourth proportional to 387,346.67, 581,053.47 and 106,863.92 is: 160,305.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,346.67 : 581,053.47 = 106,863.92 : x
  2. Step 2: Convert to fraction form
    387,346.67/581,053.47 = 106,863.92/x
  3. Step 3: Cross multiply
    387,346.67x = 581,053.47 × 106,863.92
  4. Step 4: Simplify right side
    387,346.67x = 62,093,648,628.54
  5. Step 5: Solve for x
    x = 62,093,648,628.54/387,346.67
  6. Step 6: Final answer
    x = 160,305.11

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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.