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Finding the Fourth Proportional to 403,366.40, 603,737.40 and 314,136.80

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Solution

The fourth proportional to 403,366.40, 603,737.40 and 314,136.80 is: 470,183.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,366.40 : 603,737.40 = 314,136.80 : x
  2. Step 2: Convert to fraction form
    403,366.40/603,737.40 = 314,136.80/x
  3. Step 3: Cross multiply
    403,366.40x = 603,737.40 × 314,136.80
  4. Step 4: Simplify right side
    403,366.40x = 189,656,134,876.32
  5. Step 5: Solve for x
    x = 189,656,134,876.32/403,366.40
  6. Step 6: Final answer
    x = 470,183.27

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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.