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Finding the Fourth Proportional to 378,477.72, 567,073.91 and 228,402.66

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Solution

The fourth proportional to 378,477.72, 567,073.91 and 228,402.66 is: 342,216.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,477.72 : 567,073.91 = 228,402.66 : x
  2. Step 2: Convert to fraction form
    378,477.72/567,073.91 = 228,402.66/x
  3. Step 3: Cross multiply
    378,477.72x = 567,073.91 × 228,402.66
  4. Step 4: Simplify right side
    378,477.72x = 129,521,188,318.59
  5. Step 5: Solve for x
    x = 129,521,188,318.59/378,477.72
  6. Step 6: Final answer
    x = 342,216.15

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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.