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Finding the Fourth Proportional to 329,689.20, 494,533.80 and 163,801.20

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Solution

The fourth proportional to 329,689.20, 494,533.80 and 163,801.20 is: 245,701.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,689.20 : 494,533.80 = 163,801.20 : x
  2. Step 2: Convert to fraction form
    329,689.20/494,533.80 = 163,801.20/x
  3. Step 3: Cross multiply
    329,689.20x = 494,533.80 × 163,801.20
  4. Step 4: Simplify right side
    329,689.20x = 81,005,229,880.56
  5. Step 5: Solve for x
    x = 81,005,229,880.56/329,689.20
  6. Step 6: Final answer
    x = 245,701.80

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Similar ratio
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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.