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Finding the Fourth Proportional to 396,802.66, 547,591.62 and 215,518.16

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Solution

The fourth proportional to 396,802.66, 547,591.62 and 215,518.16 is: 297,417.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,802.66 : 547,591.62 = 215,518.16 : x
  2. Step 2: Convert to fraction form
    396,802.66/547,591.62 = 215,518.16/x
  3. Step 3: Cross multiply
    396,802.66x = 547,591.62 × 215,518.16
  4. Step 4: Simplify right side
    396,802.66x = 118,015,938,373.82
  5. Step 5: Solve for x
    x = 118,015,938,373.82/396,802.66
  6. Step 6: Final answer
    x = 297,417.21

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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.