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Finding the Fourth Proportional to 228,393.48, 342,613.04 and 78,613.95

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Solution

The fourth proportional to 228,393.48, 342,613.04 and 78,613.95 is: 117,928.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,393.48 : 342,613.04 = 78,613.95 : x
  2. Step 2: Convert to fraction form
    228,393.48/342,613.04 = 78,613.95/x
  3. Step 3: Cross multiply
    228,393.48x = 342,613.04 × 78,613.95
  4. Step 4: Simplify right side
    228,393.48x = 26,934,164,002.84
  5. Step 5: Solve for x
    x = 26,934,164,002.84/228,393.48
  6. Step 6: Final answer
    x = 117,928.78

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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.