Home / 211,022.55-291,211.19-115,535.29

Finding the Fourth Proportional to 211,022.55, 291,211.19 and 115,535.29

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Solution

The fourth proportional to 211,022.55, 291,211.19 and 115,535.29 is: 159,438.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,022.55 : 291,211.19 = 115,535.29 : x
  2. Step 2: Convert to fraction form
    211,022.55/291,211.19 = 115,535.29/x
  3. Step 3: Cross multiply
    211,022.55x = 291,211.19 × 115,535.29
  4. Step 4: Simplify right side
    211,022.55x = 33,645,169,287.90
  5. Step 5: Solve for x
    x = 33,645,169,287.90/211,022.55
  6. Step 6: Final answer
    x = 159,438.74

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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.