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Finding the Fourth Proportional to 499,982.42, 750,118.86 and 180,128.21

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Solution

The fourth proportional to 499,982.42, 750,118.86 and 180,128.21 is: 270,244.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,982.42 : 750,118.86 = 180,128.21 : x
  2. Step 2: Convert to fraction form
    499,982.42/750,118.86 = 180,128.21/x
  3. Step 3: Cross multiply
    499,982.42x = 750,118.86 × 180,128.21
  4. Step 4: Simplify right side
    499,982.42x = 135,117,563,788.45
  5. Step 5: Solve for x
    x = 135,117,563,788.45/499,982.42
  6. Step 6: Final answer
    x = 270,244.63

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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.