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Finding the Fourth Proportional to 212,642.10, 318,635.10 and 184,429.80

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Solution

The fourth proportional to 212,642.10, 318,635.10 and 184,429.80 is: 276,360.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,642.10 : 318,635.10 = 184,429.80 : x
  2. Step 2: Convert to fraction form
    212,642.10/318,635.10 = 184,429.80/x
  3. Step 3: Cross multiply
    212,642.10x = 318,635.10 × 184,429.80
  4. Step 4: Simplify right side
    212,642.10x = 58,765,807,765.98
  5. Step 5: Solve for x
    x = 58,765,807,765.98/212,642.10
  6. Step 6: Final answer
    x = 276,360.17

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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.