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Finding the Fourth Proportional to 227,981.70, 341,940.15 and 78,228.90

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Solution

The fourth proportional to 227,981.70, 341,940.15 and 78,228.90 is: 117,332.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,981.70 : 341,940.15 = 78,228.90 : x
  2. Step 2: Convert to fraction form
    227,981.70/341,940.15 = 78,228.90/x
  3. Step 3: Cross multiply
    227,981.70x = 341,940.15 × 78,228.90
  4. Step 4: Simplify right side
    227,981.70x = 26,749,601,800.34
  5. Step 5: Solve for x
    x = 26,749,601,800.34/227,981.70
  6. Step 6: Final answer
    x = 117,332.23

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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.