Home / 280,515.22-386,854.59-219,269.50

Finding the Fourth Proportional to 280,515.22, 386,854.59 and 219,269.50

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Solution

The fourth proportional to 280,515.22, 386,854.59 and 219,269.50 is: 302,391.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,515.22 : 386,854.59 = 219,269.50 : x
  2. Step 2: Convert to fraction form
    280,515.22/386,854.59 = 219,269.50/x
  3. Step 3: Cross multiply
    280,515.22x = 386,854.59 × 219,269.50
  4. Step 4: Simplify right side
    280,515.22x = 84,825,412,522.01
  5. Step 5: Solve for x
    x = 84,825,412,522.01/280,515.22
  6. Step 6: Final answer
    x = 302,391.48

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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.