Home / 278,497.24-417,835.67-128,835.56

Finding the Fourth Proportional to 278,497.24, 417,835.67 and 128,835.56

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Solution

The fourth proportional to 278,497.24, 417,835.67 and 128,835.56 is: 193,294.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,497.24 : 417,835.67 = 128,835.56 : x
  2. Step 2: Convert to fraction form
    278,497.24/417,835.67 = 128,835.56/x
  3. Step 3: Cross multiply
    278,497.24x = 417,835.67 × 128,835.56
  4. Step 4: Simplify right side
    278,497.24x = 53,832,092,932.84
  5. Step 5: Solve for x
    x = 53,832,092,932.84/278,497.24
  6. Step 6: Final answer
    x = 193,294.89

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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.