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Finding the Fourth Proportional to 219,620.55, 329,430.83 and 53,408.55

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Solution

The fourth proportional to 219,620.55, 329,430.83 and 53,408.55 is: 80,112.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,620.55 : 329,430.83 = 53,408.55 : x
  2. Step 2: Convert to fraction form
    219,620.55/329,430.83 = 53,408.55/x
  3. Step 3: Cross multiply
    219,620.55x = 329,430.83 × 53,408.55
  4. Step 4: Simplify right side
    219,620.55x = 17,594,422,688.55
  5. Step 5: Solve for x
    x = 17,594,422,688.55/219,620.55
  6. Step 6: Final answer
    x = 80,112.83

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1.5x scale

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.