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Finding the Fourth Proportional to 220,666.50, 304,519.80 and 120,065.22

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Solution

The fourth proportional to 220,666.50, 304,519.80 and 120,065.22 is: 165,690.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,666.50 : 304,519.80 = 120,065.22 : x
  2. Step 2: Convert to fraction form
    220,666.50/304,519.80 = 120,065.22/x
  3. Step 3: Cross multiply
    220,666.50x = 304,519.80 × 120,065.22
  4. Step 4: Simplify right side
    220,666.50x = 36,562,236,781.36
  5. Step 5: Solve for x
    x = 36,562,236,781.36/220,666.50
  6. Step 6: Final answer
    x = 165,690.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.