Home / 227,981.20-341,939.40-78,228.40

Finding the Fourth Proportional to 227,981.20, 341,939.40 and 78,228.40

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Solution

The fourth proportional to 227,981.20, 341,939.40 and 78,228.40 is: 117,331.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,981.20 : 341,939.40 = 78,228.40 : x
  2. Step 2: Convert to fraction form
    227,981.20/341,939.40 = 78,228.40/x
  3. Step 3: Cross multiply
    227,981.20x = 341,939.40 × 78,228.40
  4. Step 4: Simplify right side
    227,981.20x = 26,749,372,158.96
  5. Step 5: Solve for x
    x = 26,749,372,158.96/227,981.20
  6. Step 6: Final answer
    x = 117,331.48

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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.