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Finding the Fourth Proportional to 217,707.60, 300,480.70 and 125,830.80

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Solution

The fourth proportional to 217,707.60, 300,480.70 and 125,830.80 is: 173,672.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,707.60 : 300,480.70 = 125,830.80 : x
  2. Step 2: Convert to fraction form
    217,707.60/300,480.70 = 125,830.80/x
  3. Step 3: Cross multiply
    217,707.60x = 300,480.70 × 125,830.80
  4. Step 4: Simplify right side
    217,707.60x = 37,809,726,865.56
  5. Step 5: Solve for x
    x = 37,809,726,865.56/217,707.60
  6. Step 6: Final answer
    x = 173,672.06

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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.