Home / 339,945.09-509,862.21-100,002.88

Finding the Fourth Proportional to 339,945.09, 509,862.21 and 100,002.88

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Solution

The fourth proportional to 339,945.09, 509,862.21 and 100,002.88 is: 149,988.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,945.09 : 509,862.21 = 100,002.88 : x
  2. Step 2: Convert to fraction form
    339,945.09/509,862.21 = 100,002.88/x
  3. Step 3: Cross multiply
    339,945.09x = 509,862.21 × 100,002.88
  4. Step 4: Simplify right side
    339,945.09x = 50,987,686,353.84
  5. Step 5: Solve for x
    x = 50,987,686,353.84/339,945.09
  6. Step 6: Final answer
    x = 149,988.01

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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.