Home / 211,212.10-291,465.30-115,717.96

Finding the Fourth Proportional to 211,212.10, 291,465.30 and 115,717.96

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Solution

The fourth proportional to 211,212.10, 291,465.30 and 115,717.96 is: 159,686.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,212.10 : 291,465.30 = 115,717.96 : x
  2. Step 2: Convert to fraction form
    211,212.10/291,465.30 = 115,717.96/x
  3. Step 3: Cross multiply
    211,212.10x = 291,465.30 × 115,717.96
  4. Step 4: Simplify right side
    211,212.10x = 33,727,769,926.79
  5. Step 5: Solve for x
    x = 33,727,769,926.79/211,212.10
  6. Step 6: Final answer
    x = 159,686.73

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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.