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Finding the Fourth Proportional to 204,955.74, 307,493.15 and 84,990.69

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Solution

The fourth proportional to 204,955.74, 307,493.15 and 84,990.69 is: 127,510.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,955.74 : 307,493.15 = 84,990.69 : x
  2. Step 2: Convert to fraction form
    204,955.74/307,493.15 = 84,990.69/x
  3. Step 3: Cross multiply
    204,955.74x = 307,493.15 × 84,990.69
  4. Step 4: Simplify right side
    204,955.74x = 26,134,054,563.82
  5. Step 5: Solve for x
    x = 26,134,054,563.82/204,955.74
  6. Step 6: Final answer
    x = 127,510.72

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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.