Home / 211,814.88-292,231.45-135,378.71

Finding the Fourth Proportional to 211,814.88, 292,231.45 and 135,378.71

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Solution

The fourth proportional to 211,814.88, 292,231.45 and 135,378.71 is: 186,775.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,814.88 : 292,231.45 = 135,378.71 : x
  2. Step 2: Convert to fraction form
    211,814.88/292,231.45 = 135,378.71/x
  3. Step 3: Cross multiply
    211,814.88x = 292,231.45 × 135,378.71
  4. Step 4: Simplify right side
    211,814.88x = 39,561,916,722.43
  5. Step 5: Solve for x
    x = 39,561,916,722.43/211,814.88
  6. Step 6: Final answer
    x = 186,775.91

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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.