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Finding the Fourth Proportional to 339,322.20, 508,983.30 and 308,218.20

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Solution

The fourth proportional to 339,322.20, 508,983.30 and 308,218.20 is: 462,327.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,322.20 : 508,983.30 = 308,218.20 : x
  2. Step 2: Convert to fraction form
    339,322.20/508,983.30 = 308,218.20/x
  3. Step 3: Cross multiply
    339,322.20x = 508,983.30 × 308,218.20
  4. Step 4: Simplify right side
    339,322.20x = 156,877,916,556.06
  5. Step 5: Solve for x
    x = 156,877,916,556.06/339,322.20
  6. Step 6: Final answer
    x = 462,327.30

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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.