Home / 396,990.07-547,848.32-215,702.46

Finding the Fourth Proportional to 396,990.07, 547,848.32 and 215,702.46

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Solution

The fourth proportional to 396,990.07, 547,848.32 and 215,702.46 is: 297,670.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,990.07 : 547,848.32 = 215,702.46 : x
  2. Step 2: Convert to fraction form
    396,990.07/547,848.32 = 215,702.46/x
  3. Step 3: Cross multiply
    396,990.07x = 547,848.32 × 215,702.46
  4. Step 4: Simplify right side
    396,990.07x = 118,172,230,330.87
  5. Step 5: Solve for x
    x = 118,172,230,330.87/396,990.07
  6. Step 6: Final answer
    x = 297,670.50

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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.