Home / 278,631.99-417,882.51-89,109.27

Finding the Fourth Proportional to 278,631.99, 417,882.51 and 89,109.27

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Solution

The fourth proportional to 278,631.99, 417,882.51 and 89,109.27 is: 133,642.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,631.99 : 417,882.51 = 89,109.27 : x
  2. Step 2: Convert to fraction form
    278,631.99/417,882.51 = 89,109.27/x
  3. Step 3: Cross multiply
    278,631.99x = 417,882.51 × 89,109.27
  4. Step 4: Simplify right side
    278,631.99x = 37,237,205,411.87
  5. Step 5: Solve for x
    x = 37,237,205,411.87/278,631.99
  6. Step 6: Final answer
    x = 133,642.97

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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.