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Finding the Fourth Proportional to 217,708.60, 300,482.08 and 125,831.80

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Solution

The fourth proportional to 217,708.60, 300,482.08 and 125,831.80 is: 173,673.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,708.60 : 300,482.08 = 125,831.80 : x
  2. Step 2: Convert to fraction form
    217,708.60/300,482.08 = 125,831.80/x
  3. Step 3: Cross multiply
    217,708.60x = 300,482.08 × 125,831.80
  4. Step 4: Simplify right side
    217,708.60x = 37,810,200,994.14
  5. Step 5: Solve for x
    x = 37,810,200,994.14/217,708.60
  6. Step 6: Final answer
    x = 173,673.44

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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.