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Finding the Fourth Proportional to 396,237, 546,816.66 and 217,389

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Solution

The fourth proportional to 396,237, 546,816.66 and 217,389 is: 300,002.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,237 : 546,816.66 = 217,389 : x
  2. Step 2: Convert to fraction form
    396,237/546,816.66 = 217,389/x
  3. Step 3: Cross multiply
    396,237x = 546,816.66 × 217,389
  4. Step 4: Simplify right side
    396,237x = 118,871,926,900.74
  5. Step 5: Solve for x
    x = 118,871,926,900.74/396,237
  6. Step 6: Final answer
    x = 300,002.09

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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.