Home / 215,920.40-323,443.20-122,316.80

Finding the Fourth Proportional to 215,920.40, 323,443.20 and 122,316.80

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Solution

The fourth proportional to 215,920.40, 323,443.20 and 122,316.80 is: 183,227.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,920.40 : 323,443.20 = 122,316.80 : x
  2. Step 2: Convert to fraction form
    215,920.40/323,443.20 = 122,316.80/x
  3. Step 3: Cross multiply
    215,920.40x = 323,443.20 × 122,316.80
  4. Step 4: Simplify right side
    215,920.40x = 39,562,537,205.76
  5. Step 5: Solve for x
    x = 39,562,537,205.76/215,920.40
  6. Step 6: Final answer
    x = 183,227.42

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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.