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Finding the Fourth Proportional to 219,872.90, 329,809.35 and 199,533.80

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Solution

The fourth proportional to 219,872.90, 329,809.35 and 199,533.80 is: 299,300.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,872.90 : 329,809.35 = 199,533.80 : x
  2. Step 2: Convert to fraction form
    219,872.90/329,809.35 = 199,533.80/x
  3. Step 3: Cross multiply
    219,872.90x = 329,809.35 × 199,533.80
  4. Step 4: Simplify right side
    219,872.90x = 65,808,112,881.03
  5. Step 5: Solve for x
    x = 65,808,112,881.03/219,872.90
  6. Step 6: Final answer
    x = 299,300.70

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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.