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Finding the Fourth Proportional to 211,374.66, 291,695.25 and 115,881.13

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Solution

The fourth proportional to 211,374.66, 291,695.25 and 115,881.13 is: 159,914.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,374.66 : 291,695.25 = 115,881.13 : x
  2. Step 2: Convert to fraction form
    211,374.66/291,695.25 = 115,881.13/x
  3. Step 3: Cross multiply
    211,374.66x = 291,695.25 × 115,881.13
  4. Step 4: Simplify right side
    211,374.66x = 33,801,975,185.63
  5. Step 5: Solve for x
    x = 33,801,975,185.63/211,374.66
  6. Step 6: Final answer
    x = 159,914.98

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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.