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Finding the Fourth Proportional to 293,891.20, 439,915.20 and 210,947.20

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Solution

The fourth proportional to 293,891.20, 439,915.20 and 210,947.20 is: 315,759.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,891.20 : 439,915.20 = 210,947.20 : x
  2. Step 2: Convert to fraction form
    293,891.20/439,915.20 = 210,947.20/x
  3. Step 3: Cross multiply
    293,891.20x = 439,915.20 × 210,947.20
  4. Step 4: Simplify right side
    293,891.20x = 92,798,879,677.44
  5. Step 5: Solve for x
    x = 92,798,879,677.44/293,891.20
  6. Step 6: Final answer
    x = 315,759.30

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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.