Home / 399,568.28-551,395.08-218,280.96

Finding the Fourth Proportional to 399,568.28, 551,395.08 and 218,280.96

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Solution

The fourth proportional to 399,568.28, 551,395.08 and 218,280.96 is: 301,222.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,568.28 : 551,395.08 = 218,280.96 : x
  2. Step 2: Convert to fraction form
    399,568.28/551,395.08 = 218,280.96/x
  3. Step 3: Cross multiply
    399,568.28x = 551,395.08 × 218,280.96
  4. Step 4: Simplify right side
    399,568.28x = 120,359,047,401.68
  5. Step 5: Solve for x
    x = 120,359,047,401.68/399,568.28
  6. Step 6: Final answer
    x = 301,222.73

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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.