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Finding the Fourth Proportional to 240,739.68, 361,108.63 and 72,259.28

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Solution

The fourth proportional to 240,739.68, 361,108.63 and 72,259.28 is: 108,388.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,739.68 : 361,108.63 = 72,259.28 : x
  2. Step 2: Convert to fraction form
    240,739.68/361,108.63 = 72,259.28/x
  3. Step 3: Cross multiply
    240,739.68x = 361,108.63 × 72,259.28
  4. Step 4: Simplify right side
    240,739.68x = 26,093,447,438.75
  5. Step 5: Solve for x
    x = 26,093,447,438.75/240,739.68
  6. Step 6: Final answer
    x = 108,388.64

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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.