Home / 399,851.73-551,795.40-218,564.37

Finding the Fourth Proportional to 399,851.73, 551,795.40 and 218,564.37

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Solution

The fourth proportional to 399,851.73, 551,795.40 and 218,564.37 is: 301,618.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,851.73 : 551,795.40 = 218,564.37 : x
  2. Step 2: Convert to fraction form
    399,851.73/551,795.40 = 218,564.37/x
  3. Step 3: Cross multiply
    399,851.73x = 551,795.40 × 218,564.37
  4. Step 4: Simplify right side
    399,851.73x = 120,602,813,969.90
  5. Step 5: Solve for x
    x = 120,602,813,969.90/399,851.73
  6. Step 6: Final answer
    x = 301,618.84

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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.