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Finding the Fourth Proportional to 212,640.10, 318,632.10 and 184,427.80

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Solution

The fourth proportional to 212,640.10, 318,632.10 and 184,427.80 is: 276,357.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,640.10 : 318,632.10 = 184,427.80 : x
  2. Step 2: Convert to fraction form
    212,640.10/318,632.10 = 184,427.80/x
  3. Step 3: Cross multiply
    212,640.10x = 318,632.10 × 184,427.80
  4. Step 4: Simplify right side
    212,640.10x = 58,764,617,212.38
  5. Step 5: Solve for x
    x = 58,764,617,212.38/212,640.10
  6. Step 6: Final answer
    x = 276,357.17

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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.