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Finding the Fourth Proportional to 373,563.40, 515,497.38 and 212,396.20

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Solution

The fourth proportional to 373,563.40, 515,497.38 and 212,396.20 is: 293,095.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,563.40 : 515,497.38 = 212,396.20 : x
  2. Step 2: Convert to fraction form
    373,563.40/515,497.38 = 212,396.20/x
  3. Step 3: Cross multiply
    373,563.40x = 515,497.38 × 212,396.20
  4. Step 4: Simplify right side
    373,563.40x = 109,489,684,621.96
  5. Step 5: Solve for x
    x = 109,489,684,621.96/373,563.40
  6. Step 6: Final answer
    x = 293,095.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.