Home / 380,959.20-525,702.96-211,217.76

Finding the Fourth Proportional to 380,959.20, 525,702.96 and 211,217.76

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Solution

The fourth proportional to 380,959.20, 525,702.96 and 211,217.76 is: 291,469.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,959.20 : 525,702.96 = 211,217.76 : x
  2. Step 2: Convert to fraction form
    380,959.20/525,702.96 = 211,217.76/x
  3. Step 3: Cross multiply
    380,959.20x = 525,702.96 × 211,217.76
  4. Step 4: Simplify right side
    380,959.20x = 111,037,801,636.57
  5. Step 5: Solve for x
    x = 111,037,801,636.57/380,959.20
  6. Step 6: Final answer
    x = 291,469.01

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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.