Home / 399,943.62-551,936.93-218,667.62

Finding the Fourth Proportional to 399,943.62, 551,936.93 and 218,667.62

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Solution

The fourth proportional to 399,943.62, 551,936.93 and 218,667.62 is: 301,769.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,943.62 : 551,936.93 = 218,667.62 : x
  2. Step 2: Convert to fraction form
    399,943.62/551,936.93 = 218,667.62/x
  3. Step 3: Cross multiply
    399,943.62x = 551,936.93 × 218,667.62
  4. Step 4: Simplify right side
    399,943.62x = 120,690,734,873.21
  5. Step 5: Solve for x
    x = 120,690,734,873.21/399,943.62
  6. Step 6: Final answer
    x = 301,769.37

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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.