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Finding the Fourth Proportional to 211,162.86, 291,404.82 and 115,671.12

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Solution

The fourth proportional to 211,162.86, 291,404.82 and 115,671.12 is: 159,626.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,162.86 : 291,404.82 = 115,671.12 : x
  2. Step 2: Convert to fraction form
    211,162.86/291,404.82 = 115,671.12/x
  3. Step 3: Cross multiply
    211,162.86x = 291,404.82 × 115,671.12
  4. Step 4: Simplify right side
    211,162.86x = 33,707,121,902.80
  5. Step 5: Solve for x
    x = 33,707,121,902.80/211,162.86
  6. Step 6: Final answer
    x = 159,626.19

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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.