Home / 726,208.80-1,089,321.12-220,851.96

Finding the Fourth Proportional to 726,208.80, 1,089,321.12 and 220,851.96

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Solution

The fourth proportional to 726,208.80, 1,089,321.12 and 220,851.96 is: 331,280.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,208.80 : 1,089,321.12 = 220,851.96 : x
  2. Step 2: Convert to fraction form
    726,208.80/1,089,321.12 = 220,851.96/x
  3. Step 3: Cross multiply
    726,208.80x = 1,089,321.12 × 220,851.96
  4. Step 4: Simplify right side
    726,208.80x = 240,578,704,421.40
  5. Step 5: Solve for x
    x = 240,578,704,421.40/726,208.80
  6. Step 6: Final answer
    x = 331,280.35

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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.