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Finding the Fourth Proportional to 228,138.75, 342,208.13 and 61,926.75

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Solution

The fourth proportional to 228,138.75, 342,208.13 and 61,926.75 is: 92,890.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,138.75 : 342,208.13 = 61,926.75 : x
  2. Step 2: Convert to fraction form
    228,138.75/342,208.13 = 61,926.75/x
  3. Step 3: Cross multiply
    228,138.75x = 342,208.13 × 61,926.75
  4. Step 4: Simplify right side
    228,138.75x = 21,191,837,004.84
  5. Step 5: Solve for x
    x = 21,191,837,004.84/228,138.75
  6. Step 6: Final answer
    x = 92,890.13

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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.