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Finding the Fourth Proportional to 240,298, 331,455.01 and 154,120.48

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Solution

The fourth proportional to 240,298, 331,455.01 and 154,120.48 is: 212,586.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,298 : 331,455.01 = 154,120.48 : x
  2. Step 2: Convert to fraction form
    240,298/331,455.01 = 154,120.48/x
  3. Step 3: Cross multiply
    240,298x = 331,455.01 × 154,120.48
  4. Step 4: Simplify right side
    240,298x = 51,084,005,239.60
  5. Step 5: Solve for x
    x = 51,084,005,239.60/240,298
  6. Step 6: Final answer
    x = 212,586.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.