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Finding the Fourth Proportional to 311,569.80, 467,661.90 and 153,976.20

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Solution

The fourth proportional to 311,569.80, 467,661.90 and 153,976.20 is: 231,116.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,569.80 : 467,661.90 = 153,976.20 : x
  2. Step 2: Convert to fraction form
    311,569.80/467,661.90 = 153,976.20/x
  3. Step 3: Cross multiply
    311,569.80x = 467,661.90 × 153,976.20
  4. Step 4: Simplify right side
    311,569.80x = 72,008,802,246.78
  5. Step 5: Solve for x
    x = 72,008,802,246.78/311,569.80
  6. Step 6: Final answer
    x = 231,116.12

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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.