Home / 215,790.72-323,779.35-115,834.17

Finding the Fourth Proportional to 215,790.72, 323,779.35 and 115,834.17

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Solution

The fourth proportional to 215,790.72, 323,779.35 and 115,834.17 is: 173,801.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,790.72 : 323,779.35 = 115,834.17 : x
  2. Step 2: Convert to fraction form
    215,790.72/323,779.35 = 115,834.17/x
  3. Step 3: Cross multiply
    215,790.72x = 323,779.35 × 115,834.17
  4. Step 4: Simplify right side
    215,790.72x = 37,504,712,270.39
  5. Step 5: Solve for x
    x = 37,504,712,270.39/215,790.72
  6. Step 6: Final answer
    x = 173,801.32

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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.