Home / 278,162.59-417,318.78-143,153.11

Finding the Fourth Proportional to 278,162.59, 417,318.78 and 143,153.11

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Solution

The fourth proportional to 278,162.59, 417,318.78 and 143,153.11 is: 214,768.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,162.59 : 417,318.78 = 143,153.11 : x
  2. Step 2: Convert to fraction form
    278,162.59/417,318.78 = 143,153.11/x
  3. Step 3: Cross multiply
    278,162.59x = 417,318.78 × 143,153.11
  4. Step 4: Simplify right side
    278,162.59x = 59,740,481,218.41
  5. Step 5: Solve for x
    x = 59,740,481,218.41/278,162.59
  6. Step 6: Final answer
    x = 214,768.21

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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.