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Finding the Fourth Proportional to 545,359.56, 818,080.34 and 145,991.48

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Solution

The fourth proportional to 545,359.56, 818,080.34 and 145,991.48 is: 218,998.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,359.56 : 818,080.34 = 145,991.48 : x
  2. Step 2: Convert to fraction form
    545,359.56/818,080.34 = 145,991.48/x
  3. Step 3: Cross multiply
    545,359.56x = 818,080.34 × 145,991.48
  4. Step 4: Simplify right side
    545,359.56x = 119,432,759,595.50
  5. Step 5: Solve for x
    x = 119,432,759,595.50/545,359.56
  6. Step 6: Final answer
    x = 218,998.20

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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.