Home / 211,379.40-291,721.95-115,904.70

Finding the Fourth Proportional to 211,379.40, 291,721.95 and 115,904.70

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Solution

The fourth proportional to 211,379.40, 291,721.95 and 115,904.70 is: 159,958.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,379.40 : 291,721.95 = 115,904.70 : x
  2. Step 2: Convert to fraction form
    211,379.40/291,721.95 = 115,904.70/x
  3. Step 3: Cross multiply
    211,379.40x = 291,721.95 × 115,904.70
  4. Step 4: Simplify right side
    211,379.40x = 33,811,945,098.17
  5. Step 5: Solve for x
    x = 33,811,945,098.17/211,379.40
  6. Step 6: Final answer
    x = 159,958.56

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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.