Home / 320,669.15-442,330.58-211,774.48

Finding the Fourth Proportional to 320,669.15, 442,330.58 and 211,774.48

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Solution

The fourth proportional to 320,669.15, 442,330.58 and 211,774.48 is: 292,121.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,669.15 : 442,330.58 = 211,774.48 : x
  2. Step 2: Convert to fraction form
    320,669.15/442,330.58 = 211,774.48/x
  3. Step 3: Cross multiply
    320,669.15x = 442,330.58 × 211,774.48
  4. Step 4: Simplify right side
    320,669.15x = 93,674,327,991.21
  5. Step 5: Solve for x
    x = 93,674,327,991.21/320,669.15
  6. Step 6: Final answer
    x = 292,121.43

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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.