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Finding the Fourth Proportional to 373,421.43, 515,319.23 and 212,276.48

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Solution

The fourth proportional to 373,421.43, 515,319.23 and 212,276.48 is: 292,940.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,421.43 : 515,319.23 = 212,276.48 : x
  2. Step 2: Convert to fraction form
    373,421.43/515,319.23 = 212,276.48/x
  3. Step 3: Cross multiply
    373,421.43x = 515,319.23 × 212,276.48
  4. Step 4: Simplify right side
    373,421.43x = 109,390,150,174.81
  5. Step 5: Solve for x
    x = 109,390,150,174.81/373,421.43
  6. Step 6: Final answer
    x = 292,940.20

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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.