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Finding the Fourth Proportional to 211,393.60, 291,716.85 and 115,897.03

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Solution

The fourth proportional to 211,393.60, 291,716.85 and 115,897.03 is: 159,934.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,393.60 : 291,716.85 = 115,897.03 : x
  2. Step 2: Convert to fraction form
    211,393.60/291,716.85 = 115,897.03/x
  3. Step 3: Cross multiply
    211,393.60x = 291,716.85 × 115,897.03
  4. Step 4: Simplify right side
    211,393.60x = 33,809,116,515.96
  5. Step 5: Solve for x
    x = 33,809,116,515.96/211,393.60
  6. Step 6: Final answer
    x = 159,934.44

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1.5x scale

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.