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Finding the Fourth Proportional to 394,927.20, 592,390.80 and 368,488.80

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Solution

The fourth proportional to 394,927.20, 592,390.80 and 368,488.80 is: 552,733.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,927.20 : 592,390.80 = 368,488.80 : x
  2. Step 2: Convert to fraction form
    394,927.20/592,390.80 = 368,488.80/x
  3. Step 3: Cross multiply
    394,927.20x = 592,390.80 × 368,488.80
  4. Step 4: Simplify right side
    394,927.20x = 218,289,375,023.04
  5. Step 5: Solve for x
    x = 218,289,375,023.04/394,927.20
  6. Step 6: Final answer
    x = 552,733.20

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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.