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Finding the Fourth Proportional to 219,481.70, 329,331.90 and 124,784.60

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Solution

The fourth proportional to 219,481.70, 329,331.90 and 124,784.60 is: 187,239.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,481.70 : 329,331.90 = 124,784.60 : x
  2. Step 2: Convert to fraction form
    219,481.70/329,331.90 = 124,784.60/x
  3. Step 3: Cross multiply
    219,481.70x = 329,331.90 × 124,784.60
  4. Step 4: Simplify right side
    219,481.70x = 41,095,549,408.74
  5. Step 5: Solve for x
    x = 41,095,549,408.74/219,481.70
  6. Step 6: Final answer
    x = 187,239.07

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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.