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Finding the Fourth Proportional to 515,267.52, 711,110.40 and 285,847.44

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Solution

The fourth proportional to 515,267.52, 711,110.40 and 285,847.44 is: 394,492.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,267.52 : 711,110.40 = 285,847.44 : x
  2. Step 2: Convert to fraction form
    515,267.52/711,110.40 = 285,847.44/x
  3. Step 3: Cross multiply
    515,267.52x = 711,110.40 × 285,847.44
  4. Step 4: Simplify right side
    515,267.52x = 203,269,087,397.38
  5. Step 5: Solve for x
    x = 203,269,087,397.38/515,267.52
  6. Step 6: Final answer
    x = 394,492.34

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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.