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Finding the Fourth Proportional to 449,136.10, 672,926.55 and 291,283.30

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Solution

The fourth proportional to 449,136.10, 672,926.55 and 291,283.30 is: 436,420.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,136.10 : 672,926.55 = 291,283.30 : x
  2. Step 2: Convert to fraction form
    449,136.10/672,926.55 = 291,283.30/x
  3. Step 3: Cross multiply
    449,136.10x = 672,926.55 × 291,283.30
  4. Step 4: Simplify right side
    449,136.10x = 196,012,266,141.62
  5. Step 5: Solve for x
    x = 196,012,266,141.62/449,136.10
  6. Step 6: Final answer
    x = 436,420.64

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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.