Home / 285,789.15-394,352.77-156,693.65

Finding the Fourth Proportional to 285,789.15, 394,352.77 and 156,693.65

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Solution

The fourth proportional to 285,789.15, 394,352.77 and 156,693.65 is: 216,217.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,789.15 : 394,352.77 = 156,693.65 : x
  2. Step 2: Convert to fraction form
    285,789.15/394,352.77 = 156,693.65/x
  3. Step 3: Cross multiply
    285,789.15x = 394,352.77 × 156,693.65
  4. Step 4: Simplify right side
    285,789.15x = 61,792,572,947.15
  5. Step 5: Solve for x
    x = 61,792,572,947.15/285,789.15
  6. Step 6: Final answer
    x = 216,217.35

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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.