Home / 312,788.25-432,006.51-205,835.75

Finding the Fourth Proportional to 312,788.25, 432,006.51 and 205,835.75

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Solution

The fourth proportional to 312,788.25, 432,006.51 and 205,835.75 is: 284,289.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,788.25 : 432,006.51 = 205,835.75 : x
  2. Step 2: Convert to fraction form
    312,788.25/432,006.51 = 205,835.75/x
  3. Step 3: Cross multiply
    312,788.25x = 432,006.51 × 205,835.75
  4. Step 4: Simplify right side
    312,788.25x = 88,922,383,990.73
  5. Step 5: Solve for x
    x = 88,922,383,990.73/312,788.25
  6. Step 6: Final answer
    x = 284,289.40

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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.