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Finding the Fourth Proportional to 394,492.20, 591,738.30 and 236,639.40

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Solution

The fourth proportional to 394,492.20, 591,738.30 and 236,639.40 is: 354,959.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,492.20 : 591,738.30 = 236,639.40 : x
  2. Step 2: Convert to fraction form
    394,492.20/591,738.30 = 236,639.40/x
  3. Step 3: Cross multiply
    394,492.20x = 591,738.30 × 236,639.40
  4. Step 4: Simplify right side
    394,492.20x = 140,028,596,269.02
  5. Step 5: Solve for x
    x = 140,028,596,269.02/394,492.20
  6. Step 6: Final answer
    x = 354,959.10

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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.