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Finding the Fourth Proportional to 220,745.55, 304,619.79 and 125,250.21

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Solution

The fourth proportional to 220,745.55, 304,619.79 and 125,250.21 is: 172,840.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,745.55 : 304,619.79 = 125,250.21 : x
  2. Step 2: Convert to fraction form
    220,745.55/304,619.79 = 125,250.21/x
  3. Step 3: Cross multiply
    220,745.55x = 304,619.79 × 125,250.21
  4. Step 4: Simplify right side
    220,745.55x = 38,153,692,667.66
  5. Step 5: Solve for x
    x = 38,153,692,667.66/220,745.55
  6. Step 6: Final answer
    x = 172,840.14

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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.