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Finding the Fourth Proportional to 516,871.22, 775,297.10 and 281,710.40

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Solution

The fourth proportional to 516,871.22, 775,297.10 and 281,710.40 is: 422,560.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,871.22 : 775,297.10 = 281,710.40 : x
  2. Step 2: Convert to fraction form
    516,871.22/775,297.10 = 281,710.40/x
  3. Step 3: Cross multiply
    516,871.22x = 775,297.10 × 281,710.40
  4. Step 4: Simplify right side
    516,871.22x = 218,409,252,987.63
  5. Step 5: Solve for x
    x = 218,409,252,987.63/516,871.22
  6. Step 6: Final answer
    x = 422,560.29

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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.