Home / 419,981.72-579,560.33-238,690.49

Finding the Fourth Proportional to 419,981.72, 579,560.33 and 238,690.49

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Solution

The fourth proportional to 419,981.72, 579,560.33 and 238,690.49 is: 329,384.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,981.72 : 579,560.33 = 238,690.49 : x
  2. Step 2: Convert to fraction form
    419,981.72/579,560.33 = 238,690.49/x
  3. Step 3: Cross multiply
    419,981.72x = 579,560.33 × 238,690.49
  4. Step 4: Simplify right side
    419,981.72x = 138,335,535,061.01
  5. Step 5: Solve for x
    x = 138,335,535,061.01/419,981.72
  6. Step 6: Final answer
    x = 329,384.66

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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.