Home / 670,387.96-1,005,365.94-221,004.28

Finding the Fourth Proportional to 670,387.96, 1,005,365.94 and 221,004.28

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Solution

The fourth proportional to 670,387.96, 1,005,365.94 and 221,004.28 is: 331,435.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,387.96 : 1,005,365.94 = 221,004.28 : x
  2. Step 2: Convert to fraction form
    670,387.96/1,005,365.94 = 221,004.28/x
  3. Step 3: Cross multiply
    670,387.96x = 1,005,365.94 × 221,004.28
  4. Step 4: Simplify right side
    670,387.96x = 222,190,175,706.22
  5. Step 5: Solve for x
    x = 222,190,175,706.22/670,387.96
  6. Step 6: Final answer
    x = 331,435.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.