Home / 211,372.86-291,688.22-115,876.28

Finding the Fourth Proportional to 211,372.86, 291,688.22 and 115,876.28

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Solution

The fourth proportional to 211,372.86, 291,688.22 and 115,876.28 is: 159,905.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,372.86 : 291,688.22 = 115,876.28 : x
  2. Step 2: Convert to fraction form
    211,372.86/291,688.22 = 115,876.28/x
  3. Step 3: Cross multiply
    211,372.86x = 291,688.22 × 115,876.28
  4. Step 4: Simplify right side
    211,372.86x = 33,799,745,853.42
  5. Step 5: Solve for x
    x = 33,799,745,853.42/211,372.86
  6. Step 6: Final answer
    x = 159,905.80

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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.