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Finding the Fourth Proportional to 392,983.80, 589,475.70 and 108,673.80

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Solution

The fourth proportional to 392,983.80, 589,475.70 and 108,673.80 is: 163,010.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,983.80 : 589,475.70 = 108,673.80 : x
  2. Step 2: Convert to fraction form
    392,983.80/589,475.70 = 108,673.80/x
  3. Step 3: Cross multiply
    392,983.80x = 589,475.70 × 108,673.80
  4. Step 4: Simplify right side
    392,983.80x = 64,060,564,326.66
  5. Step 5: Solve for x
    x = 64,060,564,326.66/392,983.80
  6. Step 6: Final answer
    x = 163,010.70

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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.