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Finding the Fourth Proportional to 211,057.26, 291,245.67 and 115,565.10

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Solution

The fourth proportional to 211,057.26, 291,245.67 and 115,565.10 is: 159,472.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,057.26 : 291,245.67 = 115,565.10 : x
  2. Step 2: Convert to fraction form
    211,057.26/291,245.67 = 115,565.10/x
  3. Step 3: Cross multiply
    211,057.26x = 291,245.67 × 115,565.10
  4. Step 4: Simplify right side
    211,057.26x = 33,657,834,978.12
  5. Step 5: Solve for x
    x = 33,657,834,978.12/211,057.26
  6. Step 6: Final answer
    x = 159,472.53

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.