Home / 278,499.24-417,838.67-128,837.56

Finding the Fourth Proportional to 278,499.24, 417,838.67 and 128,837.56

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Solution

The fourth proportional to 278,499.24, 417,838.67 and 128,837.56 is: 193,297.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,499.24 : 417,838.67 = 128,837.56 : x
  2. Step 2: Convert to fraction form
    278,499.24/417,838.67 = 128,837.56/x
  3. Step 3: Cross multiply
    278,499.24x = 417,838.67 × 128,837.56
  4. Step 4: Simplify right side
    278,499.24x = 53,833,314,716.45
  5. Step 5: Solve for x
    x = 53,833,314,716.45/278,499.24
  6. Step 6: Final answer
    x = 193,297.89

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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.