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Finding the Fourth Proportional to 319,395.18, 479,092.74 and 82,737.86

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Solution

The fourth proportional to 319,395.18, 479,092.74 and 82,737.86 is: 124,106.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,395.18 : 479,092.74 = 82,737.86 : x
  2. Step 2: Convert to fraction form
    319,395.18/479,092.74 = 82,737.86/x
  3. Step 3: Cross multiply
    319,395.18x = 479,092.74 × 82,737.86
  4. Step 4: Simplify right side
    319,395.18x = 39,639,105,653.67
  5. Step 5: Solve for x
    x = 39,639,105,653.67/319,395.18
  6. Step 6: Final answer
    x = 124,106.77

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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.