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Finding the Fourth Proportional to 347,617.30, 479,760.47 and 251,133.31

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Solution

The fourth proportional to 347,617.30, 479,760.47 and 251,133.31 is: 346,599.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,617.30 : 479,760.47 = 251,133.31 : x
  2. Step 2: Convert to fraction form
    347,617.30/479,760.47 = 251,133.31/x
  3. Step 3: Cross multiply
    347,617.30x = 479,760.47 × 251,133.31
  4. Step 4: Simplify right side
    347,617.30x = 120,483,835,124.04
  5. Step 5: Solve for x
    x = 120,483,835,124.04/347,617.30
  6. Step 6: Final answer
    x = 346,599.08

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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.