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Finding the Fourth Proportional to 373,837.53, 515,889.15 and 212,689.11

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Solution

The fourth proportional to 373,837.53, 515,889.15 and 212,689.11 is: 293,507.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,837.53 : 515,889.15 = 212,689.11 : x
  2. Step 2: Convert to fraction form
    373,837.53/515,889.15 = 212,689.11/x
  3. Step 3: Cross multiply
    373,837.53x = 515,889.15 × 212,689.11
  4. Step 4: Simplify right side
    373,837.53x = 109,724,004,172.16
  5. Step 5: Solve for x
    x = 109,724,004,172.16/373,837.53
  6. Step 6: Final answer
    x = 293,507.19

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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.