Home / 399,533.20-551,334.72-218,242.50

Finding the Fourth Proportional to 399,533.20, 551,334.72 and 218,242.50

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Solution

The fourth proportional to 399,533.20, 551,334.72 and 218,242.50 is: 301,163.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,533.20 : 551,334.72 = 218,242.50 : x
  2. Step 2: Convert to fraction form
    399,533.20/551,334.72 = 218,242.50/x
  3. Step 3: Cross multiply
    399,533.20x = 551,334.72 × 218,242.50
  4. Step 4: Simplify right side
    399,533.20x = 120,324,667,629.60
  5. Step 5: Solve for x
    x = 120,324,667,629.60/399,533.20
  6. Step 6: Final answer
    x = 301,163.13

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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.