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Finding the Fourth Proportional to 500,871.90, 751,395.39 and 220,381.86

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Solution

The fourth proportional to 500,871.90, 751,395.39 and 220,381.86 is: 330,611.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,871.90 : 751,395.39 = 220,381.86 : x
  2. Step 2: Convert to fraction form
    500,871.90/751,395.39 = 220,381.86/x
  3. Step 3: Cross multiply
    500,871.90x = 751,395.39 × 220,381.86
  4. Step 4: Simplify right side
    500,871.90x = 165,593,913,643.63
  5. Step 5: Solve for x
    x = 165,593,913,643.63/500,871.90
  6. Step 6: Final answer
    x = 330,611.31

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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.