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Finding the Fourth Proportional to 220,921.07, 304,871.07 and 120,319.07

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Solution

The fourth proportional to 220,921.07, 304,871.07 and 120,319.07 is: 166,040.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,921.07 : 304,871.07 = 120,319.07 : x
  2. Step 2: Convert to fraction form
    220,921.07/304,871.07 = 120,319.07/x
  3. Step 3: Cross multiply
    220,921.07x = 304,871.07 × 120,319.07
  4. Step 4: Simplify right side
    220,921.07x = 36,681,802,087.95
  5. Step 5: Solve for x
    x = 36,681,802,087.95/220,921.07
  6. Step 6: Final answer
    x = 166,040.31

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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.