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Finding the Fourth Proportional to 389,383.40, 582,908.70 and 231,530.60

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Solution

The fourth proportional to 389,383.40, 582,908.70 and 231,530.60 is: 346,602.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,383.40 : 582,908.70 = 231,530.60 : x
  2. Step 2: Convert to fraction form
    389,383.40/582,908.70 = 231,530.60/x
  3. Step 3: Cross multiply
    389,383.40x = 582,908.70 × 231,530.60
  4. Step 4: Simplify right side
    389,383.40x = 134,961,201,056.22
  5. Step 5: Solve for x
    x = 134,961,201,056.22/389,383.40
  6. Step 6: Final answer
    x = 346,602.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.