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Finding the Fourth Proportional to 368,470.60, 552,705.90 and 131,831.80

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Solution

The fourth proportional to 368,470.60, 552,705.90 and 131,831.80 is: 197,747.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,470.60 : 552,705.90 = 131,831.80 : x
  2. Step 2: Convert to fraction form
    368,470.60/552,705.90 = 131,831.80/x
  3. Step 3: Cross multiply
    368,470.60x = 552,705.90 × 131,831.80
  4. Step 4: Simplify right side
    368,470.60x = 72,864,213,667.62
  5. Step 5: Solve for x
    x = 72,864,213,667.62/368,470.60
  6. Step 6: Final answer
    x = 197,747.70

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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.