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Finding the Fourth Proportional to 361,215.45, 498,480.93 and 217,947.87

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Solution

The fourth proportional to 361,215.45, 498,480.93 and 217,947.87 is: 300,770.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,215.45 : 498,480.93 = 217,947.87 : x
  2. Step 2: Convert to fraction form
    361,215.45/498,480.93 = 217,947.87/x
  3. Step 3: Cross multiply
    361,215.45x = 498,480.93 × 217,947.87
  4. Step 4: Simplify right side
    361,215.45x = 108,642,856,929.12
  5. Step 5: Solve for x
    x = 108,642,856,929.12/361,215.45
  6. Step 6: Final answer
    x = 300,770.24

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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.