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Finding the Fourth Proportional to 329,491.40, 494,237.10 and 129,818.30

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Solution

The fourth proportional to 329,491.40, 494,237.10 and 129,818.30 is: 194,727.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,491.40 : 494,237.10 = 129,818.30 : x
  2. Step 2: Convert to fraction form
    329,491.40/494,237.10 = 129,818.30/x
  3. Step 3: Cross multiply
    329,491.40x = 494,237.10 × 129,818.30
  4. Step 4: Simplify right side
    329,491.40x = 64,161,020,118.93
  5. Step 5: Solve for x
    x = 64,161,020,118.93/329,491.40
  6. Step 6: Final answer
    x = 194,727.45

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Double scale
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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.