Home / 312,788.72-432,007.15-205,836.21

Finding the Fourth Proportional to 312,788.72, 432,007.15 and 205,836.21

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Solution

The fourth proportional to 312,788.72, 432,007.15 and 205,836.21 is: 284,290.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,788.72 : 432,007.15 = 205,836.21 : x
  2. Step 2: Convert to fraction form
    312,788.72/432,007.15 = 205,836.21/x
  3. Step 3: Cross multiply
    312,788.72x = 432,007.15 × 205,836.21
  4. Step 4: Simplify right side
    312,788.72x = 88,922,715,940.28
  5. Step 5: Solve for x
    x = 88,922,715,940.28/312,788.72
  6. Step 6: Final answer
    x = 284,290.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.