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Finding the Fourth Proportional to 250,603.78, 345,831.70 and 135,881.25

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Solution

The fourth proportional to 250,603.78, 345,831.70 and 135,881.25 is: 187,515.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,603.78 : 345,831.70 = 135,881.25 : x
  2. Step 2: Convert to fraction form
    250,603.78/345,831.70 = 135,881.25/x
  3. Step 3: Cross multiply
    250,603.78x = 345,831.70 × 135,881.25
  4. Step 4: Simplify right side
    250,603.78x = 46,992,043,685.63
  5. Step 5: Solve for x
    x = 46,992,043,685.63/250,603.78
  6. Step 6: Final answer
    x = 187,515.30

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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.