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Finding the Fourth Proportional to 373,468.31, 515,429.84 and 212,347.50

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Solution

The fourth proportional to 373,468.31, 515,429.84 and 212,347.50 is: 293,064.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,468.31 : 515,429.84 = 212,347.50 : x
  2. Step 2: Convert to fraction form
    373,468.31/515,429.84 = 212,347.50/x
  3. Step 3: Cross multiply
    373,468.31x = 515,429.84 × 212,347.50
  4. Step 4: Simplify right side
    373,468.31x = 109,450,237,949.40
  5. Step 5: Solve for x
    x = 109,450,237,949.40/373,468.31
  6. Step 6: Final answer
    x = 293,064.32

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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.