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Finding the Fourth Proportional to 356,300.56, 491,408.13 and 275,945.32

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Solution

The fourth proportional to 356,300.56, 491,408.13 and 275,945.32 is: 380,582.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,300.56 : 491,408.13 = 275,945.32 : x
  2. Step 2: Convert to fraction form
    356,300.56/491,408.13 = 275,945.32/x
  3. Step 3: Cross multiply
    356,300.56x = 491,408.13 × 275,945.32
  4. Step 4: Simplify right side
    356,300.56x = 135,601,773,683.45
  5. Step 5: Solve for x
    x = 135,601,773,683.45/356,300.56
  6. Step 6: Final answer
    x = 380,582.54

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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.