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Finding the Fourth Proportional to 373,395.84, 515,317.08 and 212,301.60

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Solution

The fourth proportional to 373,395.84, 515,317.08 and 212,301.60 is: 292,993.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,395.84 : 515,317.08 = 212,301.60 : x
  2. Step 2: Convert to fraction form
    373,395.84/515,317.08 = 212,301.60/x
  3. Step 3: Cross multiply
    373,395.84x = 515,317.08 × 212,301.60
  4. Step 4: Simplify right side
    373,395.84x = 109,402,640,591.33
  5. Step 5: Solve for x
    x = 109,402,640,591.33/373,395.84
  6. Step 6: Final answer
    x = 292,993.73

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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.