Home / 211,389.20-291,716.61-115,904.78

Finding the Fourth Proportional to 211,389.20, 291,716.61 and 115,904.78

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Solution

The fourth proportional to 211,389.20, 291,716.61 and 115,904.78 is: 159,948.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,389.20 : 291,716.61 = 115,904.78 : x
  2. Step 2: Convert to fraction form
    211,389.20/291,716.61 = 115,904.78/x
  3. Step 3: Cross multiply
    211,389.20x = 291,716.61 × 115,904.78
  4. Step 4: Simplify right side
    211,389.20x = 33,811,349,504.40
  5. Step 5: Solve for x
    x = 33,811,349,504.40/211,389.20
  6. Step 6: Final answer
    x = 159,948.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.