Home / 219,172.80-328,532.40-119,121.60

Finding the Fourth Proportional to 219,172.80, 328,532.40 and 119,121.60

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Solution

The fourth proportional to 219,172.80, 328,532.40 and 119,121.60 is: 178,559.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,172.80 : 328,532.40 = 119,121.60 : x
  2. Step 2: Convert to fraction form
    219,172.80/328,532.40 = 119,121.60/x
  3. Step 3: Cross multiply
    219,172.80x = 328,532.40 × 119,121.60
  4. Step 4: Simplify right side
    219,172.80x = 39,135,305,139.84
  5. Step 5: Solve for x
    x = 39,135,305,139.84/219,172.80
  6. Step 6: Final answer
    x = 178,559.13

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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.