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Finding the Fourth Proportional to 240,628.72, 360,821.58 and 140,818.90

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Solution

The fourth proportional to 240,628.72, 360,821.58 and 140,818.90 is: 211,157.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,628.72 : 360,821.58 = 140,818.90 : x
  2. Step 2: Convert to fraction form
    240,628.72/360,821.58 = 140,818.90/x
  3. Step 3: Cross multiply
    240,628.72x = 360,821.58 × 140,818.90
  4. Step 4: Simplify right side
    240,628.72x = 50,810,497,991.86
  5. Step 5: Solve for x
    x = 50,810,497,991.86/240,628.72
  6. Step 6: Final answer
    x = 211,157.25

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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.