Home / 399,845.60-551,801.68-218,569.60

Finding the Fourth Proportional to 399,845.60, 551,801.68 and 218,569.60

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Solution

The fourth proportional to 399,845.60, 551,801.68 and 218,569.60 is: 301,634.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,845.60 : 551,801.68 = 218,569.60 : x
  2. Step 2: Convert to fraction form
    399,845.60/551,801.68 = 218,569.60/x
  3. Step 3: Cross multiply
    399,845.60x = 551,801.68 × 218,569.60
  4. Step 4: Simplify right side
    399,845.60x = 120,607,072,476.93
  5. Step 5: Solve for x
    x = 120,607,072,476.93/399,845.60
  6. Step 6: Final answer
    x = 301,634.11

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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.