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Finding the Fourth Proportional to 311,570.40, 467,125.20 and 211,480.80

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Solution

The fourth proportional to 311,570.40, 467,125.20 and 211,480.80 is: 317,064.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,570.40 : 467,125.20 = 211,480.80 : x
  2. Step 2: Convert to fraction form
    311,570.40/467,125.20 = 211,480.80/x
  3. Step 3: Cross multiply
    311,570.40x = 467,125.20 × 211,480.80
  4. Step 4: Simplify right side
    311,570.40x = 98,788,010,996.16
  5. Step 5: Solve for x
    x = 98,788,010,996.16/311,570.40
  6. Step 6: Final answer
    x = 317,064.81

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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.