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Finding the Fourth Proportional to 228,409.23, 342,636.67 and 78,629.70

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Solution

The fourth proportional to 228,409.23, 342,636.67 and 78,629.70 is: 117,952.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,409.23 : 342,636.67 = 78,629.70 : x
  2. Step 2: Convert to fraction form
    228,409.23/342,636.67 = 78,629.70/x
  3. Step 3: Cross multiply
    228,409.23x = 342,636.67 × 78,629.70
  4. Step 4: Simplify right side
    228,409.23x = 26,941,418,374.52
  5. Step 5: Solve for x
    x = 26,941,418,374.52/228,409.23
  6. Step 6: Final answer
    x = 117,952.41

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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.