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Finding the Fourth Proportional to 231,503.78, 348,990.83 and 216,072.62

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Solution

The fourth proportional to 231,503.78, 348,990.83 and 216,072.62 is: 325,728.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,503.78 : 348,990.83 = 216,072.62 : x
  2. Step 2: Convert to fraction form
    231,503.78/348,990.83 = 216,072.62/x
  3. Step 3: Cross multiply
    231,503.78x = 348,990.83 × 216,072.62
  4. Step 4: Simplify right side
    231,503.78x = 75,407,362,994.07
  5. Step 5: Solve for x
    x = 75,407,362,994.07/231,503.78
  6. Step 6: Final answer
    x = 325,728.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.