Home / 399,790.04-551,711.20-218,504.12

Finding the Fourth Proportional to 399,790.04, 551,711.20 and 218,504.12

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Solution

The fourth proportional to 399,790.04, 551,711.20 and 218,504.12 is: 301,536.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,790.04 : 551,711.20 = 218,504.12 : x
  2. Step 2: Convert to fraction form
    399,790.04/551,711.20 = 218,504.12/x
  3. Step 3: Cross multiply
    399,790.04x = 551,711.20 × 218,504.12
  4. Step 4: Simplify right side
    399,790.04x = 120,551,170,250.14
  5. Step 5: Solve for x
    x = 120,551,170,250.14/399,790.04
  6. Step 6: Final answer
    x = 301,536.20

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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.