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Finding the Fourth Proportional to 228,963.45, 343,609.20 and 129,017.55

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Solution

The fourth proportional to 228,963.45, 343,609.20 and 129,017.55 is: 193,618.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,963.45 : 343,609.20 = 129,017.55 : x
  2. Step 2: Convert to fraction form
    228,963.45/343,609.20 = 129,017.55/x
  3. Step 3: Cross multiply
    228,963.45x = 343,609.20 × 129,017.55
  4. Step 4: Simplify right side
    228,963.45x = 44,331,617,141.46
  5. Step 5: Solve for x
    x = 44,331,617,141.46/228,963.45
  6. Step 6: Final answer
    x = 193,618.75

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1.5x scale

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.