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Finding the Fourth Proportional to 455,424.30, 683,136.45 and 189,047.70

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Solution

The fourth proportional to 455,424.30, 683,136.45 and 189,047.70 is: 283,571.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,424.30 : 683,136.45 = 189,047.70 : x
  2. Step 2: Convert to fraction form
    455,424.30/683,136.45 = 189,047.70/x
  3. Step 3: Cross multiply
    455,424.30x = 683,136.45 × 189,047.70
  4. Step 4: Simplify right side
    455,424.30x = 129,145,374,658.67
  5. Step 5: Solve for x
    x = 129,145,374,658.67/455,424.30
  6. Step 6: Final answer
    x = 283,571.55

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Similar ratio
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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.