Home / 211,814.73-292,231.23-135,378.56

Finding the Fourth Proportional to 211,814.73, 292,231.23 and 135,378.56

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Solution

The fourth proportional to 211,814.73, 292,231.23 and 135,378.56 is: 186,775.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,814.73 : 292,231.23 = 135,378.56 : x
  2. Step 2: Convert to fraction form
    211,814.73/292,231.23 = 135,378.56/x
  3. Step 3: Cross multiply
    211,814.73x = 292,231.23 × 135,378.56
  4. Step 4: Simplify right side
    211,814.73x = 39,561,841,643.27
  5. Step 5: Solve for x
    x = 39,561,841,643.27/211,814.73
  6. Step 6: Final answer
    x = 186,775.69

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1.5x scale

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.