Home / 278,161.09-417,316.53-143,151.61

Finding the Fourth Proportional to 278,161.09, 417,316.53 and 143,151.61

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Solution

The fourth proportional to 278,161.09, 417,316.53 and 143,151.61 is: 214,765.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,161.09 : 417,316.53 = 143,151.61 : x
  2. Step 2: Convert to fraction form
    278,161.09/417,316.53 = 143,151.61/x
  3. Step 3: Cross multiply
    278,161.09x = 417,316.53 × 143,151.61
  4. Step 4: Simplify right side
    278,161.09x = 59,739,531,062.53
  5. Step 5: Solve for x
    x = 59,739,531,062.53/278,161.09
  6. Step 6: Final answer
    x = 214,765.95

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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.