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Finding the Fourth Proportional to 319,626.71, 479,314.77 and 119,838.18

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Solution

The fourth proportional to 319,626.71, 479,314.77 and 119,838.18 is: 179,710.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,626.71 : 479,314.77 = 119,838.18 : x
  2. Step 2: Convert to fraction form
    319,626.71/479,314.77 = 119,838.18/x
  3. Step 3: Cross multiply
    319,626.71x = 479,314.77 × 119,838.18
  4. Step 4: Simplify right side
    319,626.71x = 57,440,211,031.96
  5. Step 5: Solve for x
    x = 57,440,211,031.96/319,626.71
  6. Step 6: Final answer
    x = 179,710.30

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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.