Home / 278,935.60-418,168.24-121,045.12

Finding the Fourth Proportional to 278,935.60, 418,168.24 and 121,045.12

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Solution

The fourth proportional to 278,935.60, 418,168.24 and 121,045.12 is: 181,465.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,935.60 : 418,168.24 = 121,045.12 : x
  2. Step 2: Convert to fraction form
    278,935.60/418,168.24 = 121,045.12/x
  3. Step 3: Cross multiply
    278,935.60x = 418,168.24 × 121,045.12
  4. Step 4: Simplify right side
    278,935.60x = 50,617,224,790.99
  5. Step 5: Solve for x
    x = 50,617,224,790.99/278,935.60
  6. Step 6: Final answer
    x = 181,465.63

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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.