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Finding the Fourth Proportional to 396,802.52, 547,594.02 and 215,514.58

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Solution

The fourth proportional to 396,802.52, 547,594.02 and 215,514.58 is: 297,413.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,802.52 : 547,594.02 = 215,514.58 : x
  2. Step 2: Convert to fraction form
    396,802.52/547,594.02 = 215,514.58/x
  3. Step 3: Cross multiply
    396,802.52x = 547,594.02 × 215,514.58
  4. Step 4: Simplify right side
    396,802.52x = 118,014,495,230.81
  5. Step 5: Solve for x
    x = 118,014,495,230.81/396,802.52
  6. Step 6: Final answer
    x = 297,413.67

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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.