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Finding the Fourth Proportional to 449,870.70, 674,374.05 and 260,136.30

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Solution

The fourth proportional to 449,870.70, 674,374.05 and 260,136.30 is: 389,954.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,870.70 : 674,374.05 = 260,136.30 : x
  2. Step 2: Convert to fraction form
    449,870.70/674,374.05 = 260,136.30/x
  3. Step 3: Cross multiply
    449,870.70x = 674,374.05 × 260,136.30
  4. Step 4: Simplify right side
    449,870.70x = 175,429,170,183.02
  5. Step 5: Solve for x
    x = 175,429,170,183.02/449,870.70
  6. Step 6: Final answer
    x = 389,954.65

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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.