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Finding the Fourth Proportional to 205,544.72, 308,337.60 and 55,787.42

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Solution

The fourth proportional to 205,544.72, 308,337.60 and 55,787.42 is: 83,686.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,544.72 : 308,337.60 = 55,787.42 : x
  2. Step 2: Convert to fraction form
    205,544.72/308,337.60 = 55,787.42/x
  3. Step 3: Cross multiply
    205,544.72x = 308,337.60 × 55,787.42
  4. Step 4: Simplify right side
    205,544.72x = 17,201,359,192.99
  5. Step 5: Solve for x
    x = 17,201,359,192.99/205,544.72
  6. Step 6: Final answer
    x = 83,686.70

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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.