Home / 209,265.04-313,853.28-68,990.32

Finding the Fourth Proportional to 209,265.04, 313,853.28 and 68,990.32

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Solution

The fourth proportional to 209,265.04, 313,853.28 and 68,990.32 is: 103,470.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,265.04 : 313,853.28 = 68,990.32 : x
  2. Step 2: Convert to fraction form
    209,265.04/313,853.28 = 68,990.32/x
  3. Step 3: Cross multiply
    209,265.04x = 313,853.28 × 68,990.32
  4. Step 4: Simplify right side
    209,265.04x = 21,652,838,220.25
  5. Step 5: Solve for x
    x = 21,652,838,220.25/209,265.04
  6. Step 6: Final answer
    x = 103,470.88

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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.