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Finding the Fourth Proportional to 212,477.58, 293,268.87 and 121,831.92

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Solution

The fourth proportional to 212,477.58, 293,268.87 and 121,831.92 is: 168,156.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,477.58 : 293,268.87 = 121,831.92 : x
  2. Step 2: Convert to fraction form
    212,477.58/293,268.87 = 121,831.92/x
  3. Step 3: Cross multiply
    212,477.58x = 293,268.87 × 121,831.92
  4. Step 4: Simplify right side
    212,477.58x = 35,729,509,508.33
  5. Step 5: Solve for x
    x = 35,729,509,508.33/212,477.58
  6. Step 6: Final answer
    x = 168,156.61

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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.