Home / 380,619.73-525,311.15-219,443.23

Finding the Fourth Proportional to 380,619.73, 525,311.15 and 219,443.23

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Solution

The fourth proportional to 380,619.73, 525,311.15 and 219,443.23 is: 302,863.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,619.73 : 525,311.15 = 219,443.23 : x
  2. Step 2: Convert to fraction form
    380,619.73/525,311.15 = 219,443.23/x
  3. Step 3: Cross multiply
    380,619.73x = 525,311.15 × 219,443.23
  4. Step 4: Simplify right side
    380,619.73x = 115,275,975,511.02
  5. Step 5: Solve for x
    x = 115,275,975,511.02/380,619.73
  6. Step 6: Final answer
    x = 302,863.90

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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.