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Finding the Fourth Proportional to 520,310.62, 779,992.28 and 200,258.15

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Solution

The fourth proportional to 520,310.62, 779,992.28 and 200,258.15 is: 300,204.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,310.62 : 779,992.28 = 200,258.15 : x
  2. Step 2: Convert to fraction form
    520,310.62/779,992.28 = 200,258.15/x
  3. Step 3: Cross multiply
    520,310.62x = 779,992.28 × 200,258.15
  4. Step 4: Simplify right side
    520,310.62x = 156,199,810,005.79
  5. Step 5: Solve for x
    x = 156,199,810,005.79/520,310.62
  6. Step 6: Final answer
    x = 300,204.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.