Home / 209,928.30-314,776.86-143,443.50

Finding the Fourth Proportional to 209,928.30, 314,776.86 and 143,443.50

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Solution

The fourth proportional to 209,928.30, 314,776.86 and 143,443.50 is: 215,086.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,928.30 : 314,776.86 = 143,443.50 : x
  2. Step 2: Convert to fraction form
    209,928.30/314,776.86 = 143,443.50/x
  3. Step 3: Cross multiply
    209,928.30x = 314,776.86 × 143,443.50
  4. Step 4: Simplify right side
    209,928.30x = 45,152,694,517.41
  5. Step 5: Solve for x
    x = 45,152,694,517.41/209,928.30
  6. Step 6: Final answer
    x = 215,086.27

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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.