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Finding the Fourth Proportional to 339,680.66, 508,795.56 and 258,819.98

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Solution

The fourth proportional to 339,680.66, 508,795.56 and 258,819.98 is: 387,677.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,680.66 : 508,795.56 = 258,819.98 : x
  2. Step 2: Convert to fraction form
    339,680.66/508,795.56 = 258,819.98/x
  3. Step 3: Cross multiply
    339,680.66x = 508,795.56 × 258,819.98
  4. Step 4: Simplify right side
    339,680.66x = 131,686,454,119.31
  5. Step 5: Solve for x
    x = 131,686,454,119.31/339,680.66
  6. Step 6: Final answer
    x = 387,677.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.