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Finding the Fourth Proportional to 419,755.96, 579,278.85 and 238,498.62

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Solution

The fourth proportional to 419,755.96, 579,278.85 and 238,498.62 is: 329,136.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,755.96 : 579,278.85 = 238,498.62 : x
  2. Step 2: Convert to fraction form
    419,755.96/579,278.85 = 238,498.62/x
  3. Step 3: Cross multiply
    419,755.96x = 579,278.85 × 238,498.62
  4. Step 4: Simplify right side
    419,755.96x = 138,157,206,320.19
  5. Step 5: Solve for x
    x = 138,157,206,320.19/419,755.96
  6. Step 6: Final answer
    x = 329,136.97

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1.5x scale

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.