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Finding the Fourth Proportional to 492,800.20, 739,200.30 and 315,653.20

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Solution

The fourth proportional to 492,800.20, 739,200.30 and 315,653.20 is: 473,479.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,800.20 : 739,200.30 = 315,653.20 : x
  2. Step 2: Convert to fraction form
    492,800.20/739,200.30 = 315,653.20/x
  3. Step 3: Cross multiply
    492,800.20x = 739,200.30 × 315,653.20
  4. Step 4: Simplify right side
    492,800.20x = 233,330,940,135.96
  5. Step 5: Solve for x
    x = 233,330,940,135.96/492,800.20
  6. Step 6: Final answer
    x = 473,479.80

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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.