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Finding the Fourth Proportional to 207,929.80, 311,894.70 and 74,960.20

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Solution

The fourth proportional to 207,929.80, 311,894.70 and 74,960.20 is: 112,440.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,929.80 : 311,894.70 = 74,960.20 : x
  2. Step 2: Convert to fraction form
    207,929.80/311,894.70 = 74,960.20/x
  3. Step 3: Cross multiply
    207,929.80x = 311,894.70 × 74,960.20
  4. Step 4: Simplify right side
    207,929.80x = 23,379,689,090.94
  5. Step 5: Solve for x
    x = 23,379,689,090.94/207,929.80
  6. Step 6: Final answer
    x = 112,440.30

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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.