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Finding the Fourth Proportional to 373,391.64, 515,311.08 and 212,297.24

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Solution

The fourth proportional to 373,391.64, 515,311.08 and 212,297.24 is: 292,987.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,391.64 : 515,311.08 = 212,297.24 : x
  2. Step 2: Convert to fraction form
    373,391.64/515,311.08 = 212,297.24/x
  3. Step 3: Cross multiply
    373,391.64x = 515,311.08 × 212,297.24
  4. Step 4: Simplify right side
    373,391.64x = 109,399,120,025.42
  5. Step 5: Solve for x
    x = 109,399,120,025.42/373,391.64
  6. Step 6: Final answer
    x = 292,987.60

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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.