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Finding the Fourth Proportional to 219,801.40, 329,702.10 and 218,246.20

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Solution

The fourth proportional to 219,801.40, 329,702.10 and 218,246.20 is: 327,369.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,801.40 : 329,702.10 = 218,246.20 : x
  2. Step 2: Convert to fraction form
    219,801.40/329,702.10 = 218,246.20/x
  3. Step 3: Cross multiply
    219,801.40x = 329,702.10 × 218,246.20
  4. Step 4: Simplify right side
    219,801.40x = 71,956,230,457.02
  5. Step 5: Solve for x
    x = 71,956,230,457.02/219,801.40
  6. Step 6: Final answer
    x = 327,369.30

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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.