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Finding the Fourth Proportional to 212,645.10, 318,639.60 and 184,432.80

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Solution

The fourth proportional to 212,645.10, 318,639.60 and 184,432.80 is: 276,364.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,645.10 : 318,639.60 = 184,432.80 : x
  2. Step 2: Convert to fraction form
    212,645.10/318,639.60 = 184,432.80/x
  3. Step 3: Cross multiply
    212,645.10x = 318,639.60 × 184,432.80
  4. Step 4: Simplify right side
    212,645.10x = 58,767,593,618.88
  5. Step 5: Solve for x
    x = 58,767,593,618.88/212,645.10
  6. Step 6: Final answer
    x = 276,364.67

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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.