Home / 388,742.21-582,356.75-219,751.35

Finding the Fourth Proportional to 388,742.21, 582,356.75 and 219,751.35

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Solution

The fourth proportional to 388,742.21, 582,356.75 and 219,751.35 is: 329,199.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,742.21 : 582,356.75 = 219,751.35 : x
  2. Step 2: Convert to fraction form
    388,742.21/582,356.75 = 219,751.35/x
  3. Step 3: Cross multiply
    388,742.21x = 582,356.75 × 219,751.35
  4. Step 4: Simplify right side
    388,742.21x = 127,973,685,170.28
  5. Step 5: Solve for x
    x = 127,973,685,170.28/388,742.21
  6. Step 6: Final answer
    x = 329,199.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.