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Finding the Fourth Proportional to 257,159.91, 385,553.03 and 107,443.01

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Solution

The fourth proportional to 257,159.91, 385,553.03 and 107,443.01 is: 161,086.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,159.91 : 385,553.03 = 107,443.01 : x
  2. Step 2: Convert to fraction form
    257,159.91/385,553.03 = 107,443.01/x
  3. Step 3: Cross multiply
    257,159.91x = 385,553.03 × 107,443.01
  4. Step 4: Simplify right side
    257,159.91x = 41,424,978,057.82
  5. Step 5: Solve for x
    x = 41,424,978,057.82/257,159.91
  6. Step 6: Final answer
    x = 161,086.45

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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.