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Finding the Fourth Proportional to 484,336.70, 668,374.22 and 280,396.24

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Solution

The fourth proportional to 484,336.70, 668,374.22 and 280,396.24 is: 386,940.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,336.70 : 668,374.22 = 280,396.24 : x
  2. Step 2: Convert to fraction form
    484,336.70/668,374.22 = 280,396.24/x
  3. Step 3: Cross multiply
    484,336.70x = 668,374.22 × 280,396.24
  4. Step 4: Simplify right side
    484,336.70x = 187,409,618,200.93
  5. Step 5: Solve for x
    x = 187,409,618,200.93/484,336.70
  6. Step 6: Final answer
    x = 386,940.78

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1.5x scale

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.