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Finding the Fourth Proportional to 373,642.77, 515,638.41 and 212,521.02

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Solution

The fourth proportional to 373,642.77, 515,638.41 and 212,521.02 is: 293,285.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,642.77 : 515,638.41 = 212,521.02 : x
  2. Step 2: Convert to fraction form
    373,642.77/515,638.41 = 212,521.02/x
  3. Step 3: Cross multiply
    373,642.77x = 515,638.41 × 212,521.02
  4. Step 4: Simplify right side
    373,642.77x = 109,584,000,844.38
  5. Step 5: Solve for x
    x = 109,584,000,844.38/373,642.77
  6. Step 6: Final answer
    x = 293,285.48

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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.