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Finding the Fourth Proportional to 291,991.80, 437,015.70 and 211,801.80

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Solution

The fourth proportional to 291,991.80, 437,015.70 and 211,801.80 is: 316,997.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,991.80 : 437,015.70 = 211,801.80 : x
  2. Step 2: Convert to fraction form
    291,991.80/437,015.70 = 211,801.80/x
  3. Step 3: Cross multiply
    291,991.80x = 437,015.70 × 211,801.80
  4. Step 4: Simplify right side
    291,991.80x = 92,560,711,888.26
  5. Step 5: Solve for x
    x = 92,560,711,888.26/291,991.80
  6. Step 6: Final answer
    x = 316,997.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.