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Finding the Fourth Proportional to 373,689.45, 515,688.60 and 212,544.30

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Solution

The fourth proportional to 373,689.45, 515,688.60 and 212,544.30 is: 293,309.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,689.45 : 515,688.60 = 212,544.30 : x
  2. Step 2: Convert to fraction form
    373,689.45/515,688.60 = 212,544.30/x
  3. Step 3: Cross multiply
    373,689.45x = 515,688.60 × 212,544.30
  4. Step 4: Simplify right side
    373,689.45x = 109,606,672,504.98
  5. Step 5: Solve for x
    x = 109,606,672,504.98/373,689.45
  6. Step 6: Final answer
    x = 293,309.52

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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.