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Finding the Fourth Proportional to 373,412.76, 515,221.02 and 212,255.12

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Solution

The fourth proportional to 373,412.76, 515,221.02 and 212,255.12 is: 292,861.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,412.76 : 515,221.02 = 212,255.12 : x
  2. Step 2: Convert to fraction form
    373,412.76/515,221.02 = 212,255.12/x
  3. Step 3: Cross multiply
    373,412.76x = 515,221.02 × 212,255.12
  4. Step 4: Simplify right side
    373,412.76x = 109,358,299,426.62
  5. Step 5: Solve for x
    x = 109,358,299,426.62/373,412.76
  6. Step 6: Final answer
    x = 292,861.71

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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.