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Finding the Fourth Proportional to 319,456.70, 479,134.25 and 106,206.89

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Solution

The fourth proportional to 319,456.70, 479,134.25 and 106,206.89 is: 159,293.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,456.70 : 479,134.25 = 106,206.89 : x
  2. Step 2: Convert to fraction form
    319,456.70/479,134.25 = 106,206.89/x
  3. Step 3: Cross multiply
    319,456.70x = 479,134.25 × 106,206.89
  4. Step 4: Simplify right side
    319,456.70x = 50,887,355,658.28
  5. Step 5: Solve for x
    x = 50,887,355,658.28/319,456.70
  6. Step 6: Final answer
    x = 159,293.44

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1.5x scale

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.