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Finding the Fourth Proportional to 374,287.94, 516,555.39 and 221,375.63

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Solution

The fourth proportional to 374,287.94, 516,555.39 and 221,375.63 is: 305,520.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,287.94 : 516,555.39 = 221,375.63 : x
  2. Step 2: Convert to fraction form
    374,287.94/516,555.39 = 221,375.63/x
  3. Step 3: Cross multiply
    374,287.94x = 516,555.39 × 221,375.63
  4. Step 4: Simplify right side
    374,287.94x = 114,352,772,308.37
  5. Step 5: Solve for x
    x = 114,352,772,308.37/374,287.94
  6. Step 6: Final answer
    x = 305,520.86

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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.