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Finding the Fourth Proportional to 392,710.46, 589,053.95 and 108,418.36

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Solution

The fourth proportional to 392,710.46, 589,053.95 and 108,418.36 is: 162,624.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,710.46 : 589,053.95 = 108,418.36 : x
  2. Step 2: Convert to fraction form
    392,710.46/589,053.95 = 108,418.36/x
  3. Step 3: Cross multiply
    392,710.46x = 589,053.95 × 108,418.36
  4. Step 4: Simplify right side
    392,710.46x = 63,864,263,916.36
  5. Step 5: Solve for x
    x = 63,864,263,916.36/392,710.46
  6. Step 6: Final answer
    x = 162,624.30

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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.