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Finding the Fourth Proportional to 228,616.62, 342,918.45 and 78,854.10

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Solution

The fourth proportional to 228,616.62, 342,918.45 and 78,854.10 is: 118,278.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,616.62 : 342,918.45 = 78,854.10 : x
  2. Step 2: Convert to fraction form
    228,616.62/342,918.45 = 78,854.10/x
  3. Step 3: Cross multiply
    228,616.62x = 342,918.45 × 78,854.10
  4. Step 4: Simplify right side
    228,616.62x = 27,040,525,748.15
  5. Step 5: Solve for x
    x = 27,040,525,748.15/228,616.62
  6. Step 6: Final answer
    x = 118,278.91

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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.