Home / 211,021.12-291,214.24-115,527.52

Finding the Fourth Proportional to 211,021.12, 291,214.24 and 115,527.52

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Solution

The fourth proportional to 211,021.12, 291,214.24 and 115,527.52 is: 159,430.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,021.12 : 291,214.24 = 115,527.52 : x
  2. Step 2: Convert to fraction form
    211,021.12/291,214.24 = 115,527.52/x
  3. Step 3: Cross multiply
    211,021.12x = 291,214.24 × 115,527.52
  4. Step 4: Simplify right side
    211,021.12x = 33,643,258,935.88
  5. Step 5: Solve for x
    x = 33,643,258,935.88/211,021.12
  6. Step 6: Final answer
    x = 159,430.77

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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.