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Finding the Fourth Proportional to 538,727.25, 743,443.35 and 309,299.33

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Solution

The fourth proportional to 538,727.25, 743,443.35 and 309,299.33 is: 426,832.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,727.25 : 743,443.35 = 309,299.33 : x
  2. Step 2: Convert to fraction form
    538,727.25/743,443.35 = 309,299.33/x
  3. Step 3: Cross multiply
    538,727.25x = 743,443.35 × 309,299.33
  4. Step 4: Simplify right side
    538,727.25x = 229,946,530,047.96
  5. Step 5: Solve for x
    x = 229,946,530,047.96/538,727.25
  6. Step 6: Final answer
    x = 426,832.93

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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.