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Finding the Fourth Proportional to 515,082.36, 710,813.61 and 285,674.64

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Solution

The fourth proportional to 515,082.36, 710,813.61 and 285,674.64 is: 394,230.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,082.36 : 710,813.61 = 285,674.64 : x
  2. Step 2: Convert to fraction form
    515,082.36/710,813.61 = 285,674.64/x
  3. Step 3: Cross multiply
    515,082.36x = 710,813.61 × 285,674.64
  4. Step 4: Simplify right side
    515,082.36x = 203,061,422,143.85
  5. Step 5: Solve for x
    x = 203,061,422,143.85/515,082.36
  6. Step 6: Final answer
    x = 394,230.98

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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.