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Finding the Fourth Proportional to 373,390.59, 515,309.84 and 212,296.35

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Solution

The fourth proportional to 373,390.59, 515,309.84 and 212,296.35 is: 292,986.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,390.59 : 515,309.84 = 212,296.35 : x
  2. Step 2: Convert to fraction form
    373,390.59/515,309.84 = 212,296.35/x
  3. Step 3: Cross multiply
    373,390.59x = 515,309.84 × 212,296.35
  4. Step 4: Simplify right side
    373,390.59x = 109,398,397,089.60
  5. Step 5: Solve for x
    x = 109,398,397,089.60/373,390.59
  6. Step 6: Final answer
    x = 292,986.49

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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.