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Finding the Fourth Proportional to 373,490.75, 515,344.32 and 212,318.30

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Solution

The fourth proportional to 373,490.75, 515,344.32 and 212,318.30 is: 292,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,490.75 : 515,344.32 = 212,318.30 : x
  2. Step 2: Convert to fraction form
    373,490.75/515,344.32 = 212,318.30/x
  3. Step 3: Cross multiply
    373,490.75x = 515,344.32 × 212,318.30
  4. Step 4: Simplify right side
    373,490.75x = 109,417,027,360.33
  5. Step 5: Solve for x
    x = 109,417,027,360.33/373,490.75
  6. Step 6: Final answer
    x = 292,957.80

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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.