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Finding the Fourth Proportional to 613,364.10, 920,046.15 and 192,639.30

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Solution

The fourth proportional to 613,364.10, 920,046.15 and 192,639.30 is: 288,958.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,364.10 : 920,046.15 = 192,639.30 : x
  2. Step 2: Convert to fraction form
    613,364.10/920,046.15 = 192,639.30/x
  3. Step 3: Cross multiply
    613,364.10x = 920,046.15 × 192,639.30
  4. Step 4: Simplify right side
    613,364.10x = 177,237,046,303.70
  5. Step 5: Solve for x
    x = 177,237,046,303.70/613,364.10
  6. Step 6: Final answer
    x = 288,958.95

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Double scale
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Similar ratio
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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.