Home / 275,649.72-379,895.34-215,188.92

Finding the Fourth Proportional to 275,649.72, 379,895.34 and 215,188.92

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Solution

The fourth proportional to 275,649.72, 379,895.34 and 215,188.92 is: 296,569.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,649.72 : 379,895.34 = 215,188.92 : x
  2. Step 2: Convert to fraction form
    275,649.72/379,895.34 = 215,188.92/x
  3. Step 3: Cross multiply
    275,649.72x = 379,895.34 × 215,188.92
  4. Step 4: Simplify right side
    275,649.72x = 81,749,267,927.63
  5. Step 5: Solve for x
    x = 81,749,267,927.63/275,649.72
  6. Step 6: Final answer
    x = 296,569.38

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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.