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Finding the Fourth Proportional to 211,954.59, 292,502.60 and 115,158.47

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Solution

The fourth proportional to 211,954.59, 292,502.60 and 115,158.47 is: 158,921.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,954.59 : 292,502.60 = 115,158.47 : x
  2. Step 2: Convert to fraction form
    211,954.59/292,502.60 = 115,158.47/x
  3. Step 3: Cross multiply
    211,954.59x = 292,502.60 × 115,158.47
  4. Step 4: Simplify right side
    211,954.59x = 33,684,151,887.02
  5. Step 5: Solve for x
    x = 33,684,151,887.02/211,954.59
  6. Step 6: Final answer
    x = 158,921.55

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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.