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Finding the Fourth Proportional to 202,855.40, 304,218.30 and 84,498.20

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Solution

The fourth proportional to 202,855.40, 304,218.30 and 84,498.20 is: 126,720.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,855.40 : 304,218.30 = 84,498.20 : x
  2. Step 2: Convert to fraction form
    202,855.40/304,218.30 = 84,498.20/x
  3. Step 3: Cross multiply
    202,855.40x = 304,218.30 × 84,498.20
  4. Step 4: Simplify right side
    202,855.40x = 25,705,898,757.06
  5. Step 5: Solve for x
    x = 25,705,898,757.06/202,855.40
  6. Step 6: Final answer
    x = 126,720.31

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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.