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Finding the Fourth Proportional to 664,136.70, 996,496.65 and 308,967.90

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Solution

The fourth proportional to 664,136.70, 996,496.65 and 308,967.90 is: 463,587.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,136.70 : 996,496.65 = 308,967.90 : x
  2. Step 2: Convert to fraction form
    664,136.70/996,496.65 = 308,967.90/x
  3. Step 3: Cross multiply
    664,136.70x = 996,496.65 × 308,967.90
  4. Step 4: Simplify right side
    664,136.70x = 307,885,477,307.54
  5. Step 5: Solve for x
    x = 307,885,477,307.54/664,136.70
  6. Step 6: Final answer
    x = 463,587.51

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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.