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Finding the Fourth Proportional to 257,310.87, 386,003.52 and 97,343.43

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Solution

The fourth proportional to 257,310.87, 386,003.52 and 97,343.43 is: 146,029.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,310.87 : 386,003.52 = 97,343.43 : x
  2. Step 2: Convert to fraction form
    257,310.87/386,003.52 = 97,343.43/x
  3. Step 3: Cross multiply
    257,310.87x = 386,003.52 × 97,343.43
  4. Step 4: Simplify right side
    257,310.87x = 37,574,906,628.87
  5. Step 5: Solve for x
    x = 37,574,906,628.87/257,310.87
  6. Step 6: Final answer
    x = 146,029.22

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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.