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Finding the Fourth Proportional to 353,118.88, 487,410.78 and 240,007.24

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Solution

The fourth proportional to 353,118.88, 487,410.78 and 240,007.24 is: 331,282.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,118.88 : 487,410.78 = 240,007.24 : x
  2. Step 2: Convert to fraction form
    353,118.88/487,410.78 = 240,007.24/x
  3. Step 3: Cross multiply
    353,118.88x = 487,410.78 × 240,007.24
  4. Step 4: Simplify right side
    353,118.88x = 116,982,116,054.05
  5. Step 5: Solve for x
    x = 116,982,116,054.05/353,118.88
  6. Step 6: Final answer
    x = 331,282.53

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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.