Home / 278,163.10-417,319.53-143,153.61

Finding the Fourth Proportional to 278,163.10, 417,319.53 and 143,153.61

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Solution

The fourth proportional to 278,163.10, 417,319.53 and 143,153.61 is: 214,768.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,163.10 : 417,319.53 = 143,153.61 : x
  2. Step 2: Convert to fraction form
    278,163.10/417,319.53 = 143,153.61/x
  3. Step 3: Cross multiply
    278,163.10x = 417,319.53 × 143,153.61
  4. Step 4: Simplify right side
    278,163.10x = 59,740,797,243.00
  5. Step 5: Solve for x
    x = 59,740,797,243.00/278,163.10
  6. Step 6: Final answer
    x = 214,768.95

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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.