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Finding the Fourth Proportional to 207,272.40, 310,831.80 and 67,035.60

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Solution

The fourth proportional to 207,272.40, 310,831.80 and 67,035.60 is: 100,528.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,272.40 : 310,831.80 = 67,035.60 : x
  2. Step 2: Convert to fraction form
    207,272.40/310,831.80 = 67,035.60/x
  3. Step 3: Cross multiply
    207,272.40x = 310,831.80 × 67,035.60
  4. Step 4: Simplify right side
    207,272.40x = 20,836,796,212.08
  5. Step 5: Solve for x
    x = 20,836,796,212.08/207,272.40
  6. Step 6: Final answer
    x = 100,528.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.