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Finding the Fourth Proportional to 219,491.85, 329,237.90 and 61,720.30

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Solution

The fourth proportional to 219,491.85, 329,237.90 and 61,720.30 is: 92,580.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,491.85 : 329,237.90 = 61,720.30 : x
  2. Step 2: Convert to fraction form
    219,491.85/329,237.90 = 61,720.30/x
  3. Step 3: Cross multiply
    219,491.85x = 329,237.90 × 61,720.30
  4. Step 4: Simplify right side
    219,491.85x = 20,320,661,959.37
  5. Step 5: Solve for x
    x = 20,320,661,959.37/219,491.85
  6. Step 6: Final answer
    x = 92,580.49

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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.