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Finding the Fourth Proportional to 211,171.01, 291,416.03 and 115,681.10

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Solution

The fourth proportional to 211,171.01, 291,416.03 and 115,681.10 is: 159,639.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,171.01 : 291,416.03 = 115,681.10 : x
  2. Step 2: Convert to fraction form
    211,171.01/291,416.03 = 115,681.10/x
  3. Step 3: Cross multiply
    211,171.01x = 291,416.03 × 115,681.10
  4. Step 4: Simplify right side
    211,171.01x = 33,711,324,872.55
  5. Step 5: Solve for x
    x = 33,711,324,872.55/211,171.01
  6. Step 6: Final answer
    x = 159,639.93

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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.