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Finding the Fourth Proportional to 250,603.71, 345,831.62 and 135,881.21

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Solution

The fourth proportional to 250,603.71, 345,831.62 and 135,881.21 is: 187,515.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,603.71 : 345,831.62 = 135,881.21 : x
  2. Step 2: Convert to fraction form
    250,603.71/345,831.62 = 135,881.21/x
  3. Step 3: Cross multiply
    250,603.71x = 345,831.62 × 135,881.21
  4. Step 4: Simplify right side
    250,603.71x = 46,992,016,573.30
  5. Step 5: Solve for x
    x = 46,992,016,573.30/250,603.71
  6. Step 6: Final answer
    x = 187,515.25

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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.