Home / 211,031.20-291,230.39-115,538.55

Finding the Fourth Proportional to 211,031.20, 291,230.39 and 115,538.55

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Solution

The fourth proportional to 211,031.20, 291,230.39 and 115,538.55 is: 159,447.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,031.20 : 291,230.39 = 115,538.55 : x
  2. Step 2: Convert to fraction form
    211,031.20/291,230.39 = 115,538.55/x
  3. Step 3: Cross multiply
    211,031.20x = 291,230.39 × 115,538.55
  4. Step 4: Simplify right side
    211,031.20x = 33,648,336,976.53
  5. Step 5: Solve for x
    x = 33,648,336,976.53/211,031.20
  6. Step 6: Final answer
    x = 159,447.21

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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.