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Finding the Fourth Proportional to 228,471.73, 342,730.55 and 78,692.29

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Solution

The fourth proportional to 228,471.73, 342,730.55 and 78,692.29 is: 118,046.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,471.73 : 342,730.55 = 78,692.29 : x
  2. Step 2: Convert to fraction form
    228,471.73/342,730.55 = 78,692.29/x
  3. Step 3: Cross multiply
    228,471.73x = 342,730.55 × 78,692.29
  4. Step 4: Simplify right side
    228,471.73x = 26,970,251,832.46
  5. Step 5: Solve for x
    x = 26,970,251,832.46/228,471.73
  6. Step 6: Final answer
    x = 118,046.34

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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.