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Finding the Fourth Proportional to 319,423.88, 479,032.11 and 106,134.51

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Solution

The fourth proportional to 319,423.88, 479,032.11 and 106,134.51 is: 159,167.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,423.88 : 479,032.11 = 106,134.51 : x
  2. Step 2: Convert to fraction form
    319,423.88/479,032.11 = 106,134.51/x
  3. Step 3: Cross multiply
    319,423.88x = 479,032.11 × 106,134.51
  4. Step 4: Simplify right side
    319,423.88x = 50,841,838,999.56
  5. Step 5: Solve for x
    x = 50,841,838,999.56/319,423.88
  6. Step 6: Final answer
    x = 159,167.31

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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.