Home / 399,529.16-551,352.12-218,243.60

Finding the Fourth Proportional to 399,529.16, 551,352.12 and 218,243.60

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Solution

The fourth proportional to 399,529.16, 551,352.12 and 218,243.60 is: 301,177.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,529.16 : 551,352.12 = 218,243.60 : x
  2. Step 2: Convert to fraction form
    399,529.16/551,352.12 = 218,243.60/x
  3. Step 3: Cross multiply
    399,529.16x = 551,352.12 × 218,243.60
  4. Step 4: Simplify right side
    399,529.16x = 120,329,071,536.43
  5. Step 5: Solve for x
    x = 120,329,071,536.43/399,529.16
  6. Step 6: Final answer
    x = 301,177.19

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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.