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Finding the Fourth Proportional to 220,970.70, 304,928.75 and 125,475.35

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Solution

The fourth proportional to 220,970.70, 304,928.75 and 125,475.35 is: 173,149.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,970.70 : 304,928.75 = 125,475.35 : x
  2. Step 2: Convert to fraction form
    220,970.70/304,928.75 = 125,475.35/x
  3. Step 3: Cross multiply
    220,970.70x = 304,928.75 × 125,475.35
  4. Step 4: Simplify right side
    220,970.70x = 38,261,040,420.36
  5. Step 5: Solve for x
    x = 38,261,040,420.36/220,970.70
  6. Step 6: Final answer
    x = 173,149.84

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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.