Home / 670,386.96-1,005,364.44-221,003.28

Finding the Fourth Proportional to 670,386.96, 1,005,364.44 and 221,003.28

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Solution

The fourth proportional to 670,386.96, 1,005,364.44 and 221,003.28 is: 331,433.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,386.96 : 1,005,364.44 = 221,003.28 : x
  2. Step 2: Convert to fraction form
    670,386.96/1,005,364.44 = 221,003.28/x
  3. Step 3: Cross multiply
    670,386.96x = 1,005,364.44 × 221,003.28
  4. Step 4: Simplify right side
    670,386.96x = 222,188,838,835.36
  5. Step 5: Solve for x
    x = 222,188,838,835.36/670,386.96
  6. Step 6: Final answer
    x = 331,433.71

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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.