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Finding the Fourth Proportional to 292,645.92, 438,924 and 92,940.48

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Solution

The fourth proportional to 292,645.92, 438,924 and 92,940.48 is: 139,396.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,645.92 : 438,924 = 92,940.48 : x
  2. Step 2: Convert to fraction form
    292,645.92/438,924 = 92,940.48/x
  3. Step 3: Cross multiply
    292,645.92x = 438,924 × 92,940.48
  4. Step 4: Simplify right side
    292,645.92x = 40,793,807,243.52
  5. Step 5: Solve for x
    x = 40,793,807,243.52/292,645.92
  6. Step 6: Final answer
    x = 139,396.47

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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.