Home / 420,076.86-579,740.49-238,845.66

Finding the Fourth Proportional to 420,076.86, 579,740.49 and 238,845.66

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Solution

The fourth proportional to 420,076.86, 579,740.49 and 238,845.66 is: 329,626.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,076.86 : 579,740.49 = 238,845.66 : x
  2. Step 2: Convert to fraction form
    420,076.86/579,740.49 = 238,845.66/x
  3. Step 3: Cross multiply
    420,076.86x = 579,740.49 × 238,845.66
  4. Step 4: Simplify right side
    420,076.86x = 138,468,499,962.77
  5. Step 5: Solve for x
    x = 138,468,499,962.77/420,076.86
  6. Step 6: Final answer
    x = 329,626.58

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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.