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Finding the Fourth Proportional to 311,458.80, 437,223.30 and 311,458.80

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Solution

The fourth proportional to 311,458.80, 437,223.30 and 311,458.80 is: 437,223.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,458.80 : 437,223.30 = 311,458.80 : x
  2. Step 2: Convert to fraction form
    311,458.80/437,223.30 = 311,458.80/x
  3. Step 3: Cross multiply
    311,458.80x = 437,223.30 × 311,458.80
  4. Step 4: Simplify right side
    311,458.80x = 136,177,044,350.04
  5. Step 5: Solve for x
    x = 136,177,044,350.04/311,458.80
  6. Step 6: Final answer
    x = 437,223.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.