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Finding the Fourth Proportional to 220,729.50, 304,585.65 and 123,911.22

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Solution

The fourth proportional to 220,729.50, 304,585.65 and 123,911.22 is: 170,985.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,729.50 : 304,585.65 = 123,911.22 : x
  2. Step 2: Convert to fraction form
    220,729.50/304,585.65 = 123,911.22/x
  3. Step 3: Cross multiply
    220,729.50x = 304,585.65 × 123,911.22
  4. Step 4: Simplify right side
    220,729.50x = 37,741,579,485.99
  5. Step 5: Solve for x
    x = 37,741,579,485.99/220,729.50
  6. Step 6: Final answer
    x = 170,985.66

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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.