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Finding the Fourth Proportional to 353,337.90, 487,561.94 and 238,865.56

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Solution

The fourth proportional to 353,337.90, 487,561.94 and 238,865.56 is: 329,604.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,337.90 : 487,561.94 = 238,865.56 : x
  2. Step 2: Convert to fraction form
    353,337.90/487,561.94 = 238,865.56/x
  3. Step 3: Cross multiply
    353,337.90x = 487,561.94 × 238,865.56
  4. Step 4: Simplify right side
    353,337.90x = 116,461,755,832.79
  5. Step 5: Solve for x
    x = 116,461,755,832.79/353,337.90
  6. Step 6: Final answer
    x = 329,604.48

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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.