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Finding the Fourth Proportional to 212,408.91, 318,612.96 and 62,754.32

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Solution

The fourth proportional to 212,408.91, 318,612.96 and 62,754.32 is: 94,131.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,408.91 : 318,612.96 = 62,754.32 : x
  2. Step 2: Convert to fraction form
    212,408.91/318,612.96 = 62,754.32/x
  3. Step 3: Cross multiply
    212,408.91x = 318,612.96 × 62,754.32
  4. Step 4: Simplify right side
    212,408.91x = 19,994,339,647.99
  5. Step 5: Solve for x
    x = 19,994,339,647.99/212,408.91
  6. Step 6: Final answer
    x = 94,131.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.