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Finding the Fourth Proportional to 664,477.70, 996,862.35 and 215,122.10

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Solution

The fourth proportional to 664,477.70, 996,862.35 and 215,122.10 is: 322,730.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,477.70 : 996,862.35 = 215,122.10 : x
  2. Step 2: Convert to fraction form
    664,477.70/996,862.35 = 215,122.10/x
  3. Step 3: Cross multiply
    664,477.70x = 996,862.35 × 215,122.10
  4. Step 4: Simplify right side
    664,477.70x = 214,447,122,142.94
  5. Step 5: Solve for x
    x = 214,447,122,142.94/664,477.70
  6. Step 6: Final answer
    x = 322,730.35

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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.