Home / 221,488.40-305,683.20-125,976.66

Finding the Fourth Proportional to 221,488.40, 305,683.20 and 125,976.66

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Solution

The fourth proportional to 221,488.40, 305,683.20 and 125,976.66 is: 173,864.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,488.40 : 305,683.20 = 125,976.66 : x
  2. Step 2: Convert to fraction form
    221,488.40/305,683.20 = 125,976.66/x
  3. Step 3: Cross multiply
    221,488.40x = 305,683.20 × 125,976.66
  4. Step 4: Simplify right side
    221,488.40x = 38,508,948,554.11
  5. Step 5: Solve for x
    x = 38,508,948,554.11/221,488.40
  6. Step 6: Final answer
    x = 173,864.40

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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.