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Finding the Fourth Proportional to 319,624.38, 479,311.80 and 119,835.72

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Solution

The fourth proportional to 319,624.38, 479,311.80 and 119,835.72 is: 179,706.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,624.38 : 479,311.80 = 119,835.72 : x
  2. Step 2: Convert to fraction form
    319,624.38/479,311.80 = 119,835.72/x
  3. Step 3: Cross multiply
    319,624.38x = 479,311.80 × 119,835.72
  4. Step 4: Simplify right side
    319,624.38x = 57,438,674,657.50
  5. Step 5: Solve for x
    x = 57,438,674,657.50/319,624.38
  6. Step 6: Final answer
    x = 179,706.80

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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.