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Finding the Fourth Proportional to 387,357.29, 581,069.37 and 106,874.54

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Solution

The fourth proportional to 387,357.29, 581,069.37 and 106,874.54 is: 160,321.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,357.29 : 581,069.37 = 106,874.54 : x
  2. Step 2: Convert to fraction form
    387,357.29/581,069.37 = 106,874.54/x
  3. Step 3: Cross multiply
    387,357.29x = 581,069.37 × 106,874.54
  4. Step 4: Simplify right side
    387,357.29x = 62,101,518,721.49
  5. Step 5: Solve for x
    x = 62,101,518,721.49/387,357.29
  6. Step 6: Final answer
    x = 160,321.03

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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.