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Finding the Fourth Proportional to 333,218.40, 499,390.20 and 133,375.20

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Solution

The fourth proportional to 333,218.40, 499,390.20 and 133,375.20 is: 199,887.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,218.40 : 499,390.20 = 133,375.20 : x
  2. Step 2: Convert to fraction form
    333,218.40/499,390.20 = 133,375.20/x
  3. Step 3: Cross multiply
    333,218.40x = 499,390.20 × 133,375.20
  4. Step 4: Simplify right side
    333,218.40x = 66,606,267,803.04
  5. Step 5: Solve for x
    x = 66,606,267,803.04/333,218.40
  6. Step 6: Final answer
    x = 199,887.72

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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.