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Finding the Fourth Proportional to 484,339.70, 668,378.36 and 280,399.24

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Solution

The fourth proportional to 484,339.70, 668,378.36 and 280,399.24 is: 386,944.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,339.70 : 668,378.36 = 280,399.24 : x
  2. Step 2: Convert to fraction form
    484,339.70/668,378.36 = 280,399.24/x
  3. Step 3: Cross multiply
    484,339.70x = 668,378.36 × 280,399.24
  4. Step 4: Simplify right side
    484,339.70x = 187,412,784,176.45
  5. Step 5: Solve for x
    x = 187,412,784,176.45/484,339.70
  6. Step 6: Final answer
    x = 386,944.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.