Home / 217,488.19-300,113.53-121,976.41

Finding the Fourth Proportional to 217,488.19, 300,113.53 and 121,976.41

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Solution

The fourth proportional to 217,488.19, 300,113.53 and 121,976.41 is: 168,316.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,488.19 : 300,113.53 = 121,976.41 : x
  2. Step 2: Convert to fraction form
    217,488.19/300,113.53 = 121,976.41/x
  3. Step 3: Cross multiply
    217,488.19x = 300,113.53 × 121,976.41
  4. Step 4: Simplify right side
    217,488.19x = 36,606,770,981.83
  5. Step 5: Solve for x
    x = 36,606,770,981.83/217,488.19
  6. Step 6: Final answer
    x = 168,316.13

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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.