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Finding the Fourth Proportional to 291,900.60, 437,996.70 and 165,637.80

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Solution

The fourth proportional to 291,900.60, 437,996.70 and 165,637.80 is: 248,539.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,900.60 : 437,996.70 = 165,637.80 : x
  2. Step 2: Convert to fraction form
    291,900.60/437,996.70 = 165,637.80/x
  3. Step 3: Cross multiply
    291,900.60x = 437,996.70 × 165,637.80
  4. Step 4: Simplify right side
    291,900.60x = 72,548,809,795.26
  5. Step 5: Solve for x
    x = 72,548,809,795.26/291,900.60
  6. Step 6: Final answer
    x = 248,539.43

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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.