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Finding the Fourth Proportional to 204,398.66, 306,598.10 and 91,947.51

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Solution

The fourth proportional to 204,398.66, 306,598.10 and 91,947.51 is: 137,921.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,398.66 : 306,598.10 = 91,947.51 : x
  2. Step 2: Convert to fraction form
    204,398.66/306,598.10 = 91,947.51/x
  3. Step 3: Cross multiply
    204,398.66x = 306,598.10 × 91,947.51
  4. Step 4: Simplify right side
    204,398.66x = 28,190,931,405.99
  5. Step 5: Solve for x
    x = 28,190,931,405.99/204,398.66
  6. Step 6: Final answer
    x = 137,921.31

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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.