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Finding the Fourth Proportional to 319,366.78, 479,087.16 and 106,153.72

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Solution

The fourth proportional to 319,366.78, 479,087.16 and 106,153.72 is: 159,242.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,366.78 : 479,087.16 = 106,153.72 : x
  2. Step 2: Convert to fraction form
    319,366.78/479,087.16 = 106,153.72/x
  3. Step 3: Cross multiply
    319,366.78x = 479,087.16 × 106,153.72
  4. Step 4: Simplify right side
    319,366.78x = 50,856,884,238.24
  5. Step 5: Solve for x
    x = 50,856,884,238.24/319,366.78
  6. Step 6: Final answer
    x = 159,242.88

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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.