Home / 213,611.04-320,438.46-80,603.22

Finding the Fourth Proportional to 213,611.04, 320,438.46 and 80,603.22

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Solution

The fourth proportional to 213,611.04, 320,438.46 and 80,603.22 is: 120,913.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,611.04 : 320,438.46 = 80,603.22 : x
  2. Step 2: Convert to fraction form
    213,611.04/320,438.46 = 80,603.22/x
  3. Step 3: Cross multiply
    213,611.04x = 320,438.46 × 80,603.22
  4. Step 4: Simplify right side
    213,611.04x = 25,828,371,687.84
  5. Step 5: Solve for x
    x = 25,828,371,687.84/213,611.04
  6. Step 6: Final answer
    x = 120,913.09

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1.5x scale

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.