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Finding the Fourth Proportional to 331,991.16, 458,147.80 and 181,088.16

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Solution

The fourth proportional to 331,991.16, 458,147.80 and 181,088.16 is: 249,901.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,991.16 : 458,147.80 = 181,088.16 : x
  2. Step 2: Convert to fraction form
    331,991.16/458,147.80 = 181,088.16/x
  3. Step 3: Cross multiply
    331,991.16x = 458,147.80 × 181,088.16
  4. Step 4: Simplify right side
    331,991.16x = 82,965,139,599.73
  5. Step 5: Solve for x
    x = 82,965,139,599.73/331,991.16
  6. Step 6: Final answer
    x = 249,901.66

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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.