Home / 399,454.07-551,243.81-218,166.08

Finding the Fourth Proportional to 399,454.07, 551,243.81 and 218,166.08

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Solution

The fourth proportional to 399,454.07, 551,243.81 and 218,166.08 is: 301,067.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,454.07 : 551,243.81 = 218,166.08 : x
  2. Step 2: Convert to fraction form
    399,454.07/551,243.81 = 218,166.08/x
  3. Step 3: Cross multiply
    399,454.07x = 551,243.81 × 218,166.08
  4. Step 4: Simplify right side
    399,454.07x = 120,262,698,941.16
  5. Step 5: Solve for x
    x = 120,262,698,941.16/399,454.07
  6. Step 6: Final answer
    x = 301,067.66

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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.