Home / 306,613.20-459,884.77-81,991.15

Finding the Fourth Proportional to 306,613.20, 459,884.77 and 81,991.15

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Solution

The fourth proportional to 306,613.20, 459,884.77 and 81,991.15 is: 122,977.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,613.20 : 459,884.77 = 81,991.15 : x
  2. Step 2: Convert to fraction form
    306,613.20/459,884.77 = 81,991.15/x
  3. Step 3: Cross multiply
    306,613.20x = 459,884.77 × 81,991.15
  4. Step 4: Simplify right side
    306,613.20x = 37,706,481,159.79
  5. Step 5: Solve for x
    x = 37,706,481,159.79/306,613.20
  6. Step 6: Final answer
    x = 122,977.36

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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.