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Finding the Fourth Proportional to 373,510.64, 515,424 and 212,343.44

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Solution

The fourth proportional to 373,510.64, 515,424 and 212,343.44 is: 293,022.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,510.64 : 515,424 = 212,343.44 : x
  2. Step 2: Convert to fraction form
    373,510.64/515,424 = 212,343.44/x
  3. Step 3: Cross multiply
    373,510.64x = 515,424 × 212,343.44
  4. Step 4: Simplify right side
    373,510.64x = 109,446,905,218.56
  5. Step 5: Solve for x
    x = 109,446,905,218.56/373,510.64
  6. Step 6: Final answer
    x = 293,022.19

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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.