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Finding the Fourth Proportional to 396,852.84, 547,663.59 and 215,565.12

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Solution

The fourth proportional to 396,852.84, 547,663.59 and 215,565.12 is: 297,483.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,852.84 : 547,663.59 = 215,565.12 : x
  2. Step 2: Convert to fraction form
    396,852.84/547,663.59 = 215,565.12/x
  3. Step 3: Cross multiply
    396,852.84x = 547,663.59 × 215,565.12
  4. Step 4: Simplify right side
    396,852.84x = 118,057,167,497.98
  5. Step 5: Solve for x
    x = 118,057,167,497.98/396,852.84
  6. Step 6: Final answer
    x = 297,483.49

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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.