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Finding the Fourth Proportional to 219,748.60, 329,622.90 and 120,215.80

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Solution

The fourth proportional to 219,748.60, 329,622.90 and 120,215.80 is: 180,323.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,748.60 : 329,622.90 = 120,215.80 : x
  2. Step 2: Convert to fraction form
    219,748.60/329,622.90 = 120,215.80/x
  3. Step 3: Cross multiply
    219,748.60x = 329,622.90 × 120,215.80
  4. Step 4: Simplify right side
    219,748.60x = 39,625,880,621.82
  5. Step 5: Solve for x
    x = 39,625,880,621.82/219,748.60
  6. Step 6: Final answer
    x = 180,323.70

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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.