Home / 399,729.24-551,633.60-218,448.84

Finding the Fourth Proportional to 399,729.24, 551,633.60 and 218,448.84

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Solution

The fourth proportional to 399,729.24, 551,633.60 and 218,448.84 is: 301,463.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,729.24 : 551,633.60 = 218,448.84 : x
  2. Step 2: Convert to fraction form
    399,729.24/551,633.60 = 218,448.84/x
  3. Step 3: Cross multiply
    399,729.24x = 551,633.60 × 218,448.84
  4. Step 4: Simplify right side
    399,729.24x = 120,503,720,025.02
  5. Step 5: Solve for x
    x = 120,503,720,025.02/399,729.24
  6. Step 6: Final answer
    x = 301,463.36

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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.