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Finding the Fourth Proportional to 507,811.20, 761,716.80 and 133,834.20

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Solution

The fourth proportional to 507,811.20, 761,716.80 and 133,834.20 is: 200,751.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,811.20 : 761,716.80 = 133,834.20 : x
  2. Step 2: Convert to fraction form
    507,811.20/761,716.80 = 133,834.20/x
  3. Step 3: Cross multiply
    507,811.20x = 761,716.80 × 133,834.20
  4. Step 4: Simplify right side
    507,811.20x = 101,943,758,554.56
  5. Step 5: Solve for x
    x = 101,943,758,554.56/507,811.20
  6. Step 6: Final answer
    x = 200,751.30

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Similar ratio
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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.