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Finding the Fourth Proportional to 339,021.45, 508,616.01 and 239,376.87

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Solution

The fourth proportional to 339,021.45, 508,616.01 and 239,376.87 is: 359,124.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,021.45 : 508,616.01 = 239,376.87 : x
  2. Step 2: Convert to fraction form
    339,021.45/508,616.01 = 239,376.87/x
  3. Step 3: Cross multiply
    339,021.45x = 508,616.01 × 239,376.87
  4. Step 4: Simplify right side
    339,021.45x = 121,750,908,505.69
  5. Step 5: Solve for x
    x = 121,750,908,505.69/339,021.45
  6. Step 6: Final answer
    x = 359,124.50

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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.