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Finding the Fourth Proportional to 323,139.86, 484,706.38 and 83,252.79

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Solution

The fourth proportional to 323,139.86, 484,706.38 and 83,252.79 is: 124,878.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,139.86 : 484,706.38 = 83,252.79 : x
  2. Step 2: Convert to fraction form
    323,139.86/484,706.38 = 83,252.79/x
  3. Step 3: Cross multiply
    323,139.86x = 484,706.38 × 83,252.79
  4. Step 4: Simplify right side
    323,139.86x = 40,353,157,050.53
  5. Step 5: Solve for x
    x = 40,353,157,050.53/323,139.86
  6. Step 6: Final answer
    x = 124,878.30

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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.