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Finding the Fourth Proportional to 207,606.78, 311,410.35 and 148,557.78

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Solution

The fourth proportional to 207,606.78, 311,410.35 and 148,557.78 is: 222,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,606.78 : 311,410.35 = 148,557.78 : x
  2. Step 2: Convert to fraction form
    207,606.78/311,410.35 = 148,557.78/x
  3. Step 3: Cross multiply
    207,606.78x = 311,410.35 × 148,557.78
  4. Step 4: Simplify right side
    207,606.78x = 46,262,430,265.02
  5. Step 5: Solve for x
    x = 46,262,430,265.02/207,606.78
  6. Step 6: Final answer
    x = 222,836.80

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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.