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Finding the Fourth Proportional to 218,076.90, 306,007.50 and 218,076.90

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Solution

The fourth proportional to 218,076.90, 306,007.50 and 218,076.90 is: 306,007.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,076.90 : 306,007.50 = 218,076.90 : x
  2. Step 2: Convert to fraction form
    218,076.90/306,007.50 = 218,076.90/x
  3. Step 3: Cross multiply
    218,076.90x = 306,007.50 × 218,076.90
  4. Step 4: Simplify right side
    218,076.90x = 66,733,166,976.75
  5. Step 5: Solve for x
    x = 66,733,166,976.75/218,076.90
  6. Step 6: Final answer
    x = 306,007.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.