Home / 420,222.86-579,934.95-238,951.66

Finding the Fourth Proportional to 420,222.86, 579,934.95 and 238,951.66

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Solution

The fourth proportional to 420,222.86, 579,934.95 and 238,951.66 is: 329,768.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,222.86 : 579,934.95 = 238,951.66 : x
  2. Step 2: Convert to fraction form
    420,222.86/579,934.95 = 238,951.66/x
  3. Step 3: Cross multiply
    420,222.86x = 579,934.95 × 238,951.66
  4. Step 4: Simplify right side
    420,222.86x = 138,576,414,900.08
  5. Step 5: Solve for x
    x = 138,576,414,900.08/420,222.86
  6. Step 6: Final answer
    x = 329,768.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.