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Finding the Fourth Proportional to 356,321.79, 491,587.25 and 203,368.48

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Solution

The fourth proportional to 356,321.79, 491,587.25 and 203,368.48 is: 280,570.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,321.79 : 491,587.25 = 203,368.48 : x
  2. Step 2: Convert to fraction form
    356,321.79/491,587.25 = 203,368.48/x
  3. Step 3: Cross multiply
    356,321.79x = 491,587.25 × 203,368.48
  4. Step 4: Simplify right side
    356,321.79x = 99,973,351,099.33
  5. Step 5: Solve for x
    x = 99,973,351,099.33/356,321.79
  6. Step 6: Final answer
    x = 280,570.41

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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.