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Finding the Fourth Proportional to 247,084.02, 340,957.08 and 139,664.12

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Solution

The fourth proportional to 247,084.02, 340,957.08 and 139,664.12 is: 192,725.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,084.02 : 340,957.08 = 139,664.12 : x
  2. Step 2: Convert to fraction form
    247,084.02/340,957.08 = 139,664.12/x
  3. Step 3: Cross multiply
    247,084.02x = 340,957.08 × 139,664.12
  4. Step 4: Simplify right side
    247,084.02x = 47,619,468,831.18
  5. Step 5: Solve for x
    x = 47,619,468,831.18/247,084.02
  6. Step 6: Final answer
    x = 192,725.81

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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.