Home / 420,260.55-579,956.81-238,972.49

Finding the Fourth Proportional to 420,260.55, 579,956.81 and 238,972.49

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Solution

The fourth proportional to 420,260.55, 579,956.81 and 238,972.49 is: 329,780.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,260.55 : 579,956.81 = 238,972.49 : x
  2. Step 2: Convert to fraction form
    420,260.55/579,956.81 = 238,972.49/x
  3. Step 3: Cross multiply
    420,260.55x = 579,956.81 × 238,972.49
  4. Step 4: Simplify right side
    420,260.55x = 138,593,723,553.75
  5. Step 5: Solve for x
    x = 138,593,723,553.75/420,260.55
  6. Step 6: Final answer
    x = 329,780.48

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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.