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Finding the Fourth Proportional to 373,686.45, 515,684.46 and 212,541.30

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Solution

The fourth proportional to 373,686.45, 515,684.46 and 212,541.30 is: 293,305.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,686.45 : 515,684.46 = 212,541.30 : x
  2. Step 2: Convert to fraction form
    373,686.45/515,684.46 = 212,541.30/x
  3. Step 3: Cross multiply
    373,686.45x = 515,684.46 × 212,541.30
  4. Step 4: Simplify right side
    373,686.45x = 109,604,245,518.20
  5. Step 5: Solve for x
    x = 109,604,245,518.20/373,686.45
  6. Step 6: Final answer
    x = 293,305.38

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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.