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Finding the Fourth Proportional to 228,086.66, 342,044.90 and 78,284.44

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Solution

The fourth proportional to 228,086.66, 342,044.90 and 78,284.44 is: 117,397.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,086.66 : 342,044.90 = 78,284.44 : x
  2. Step 2: Convert to fraction form
    228,086.66/342,044.90 = 78,284.44/x
  3. Step 3: Cross multiply
    228,086.66x = 342,044.90 × 78,284.44
  4. Step 4: Simplify right side
    228,086.66x = 26,776,793,451.36
  5. Step 5: Solve for x
    x = 26,776,793,451.36/228,086.66
  6. Step 6: Final answer
    x = 117,397.46

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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.