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Finding the Fourth Proportional to 392,553.95, 589,005.90 and 143,177.63

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Solution

The fourth proportional to 392,553.95, 589,005.90 and 143,177.63 is: 214,830.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,553.95 : 589,005.90 = 143,177.63 : x
  2. Step 2: Convert to fraction form
    392,553.95/589,005.90 = 143,177.63/x
  3. Step 3: Cross multiply
    392,553.95x = 589,005.90 × 143,177.63
  4. Step 4: Simplify right side
    392,553.95x = 84,332,465,872.99
  5. Step 5: Solve for x
    x = 84,332,465,872.99/392,553.95
  6. Step 6: Final answer
    x = 214,830.26

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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.