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Finding the Fourth Proportional to 664,417.87, 996,772.15 and 215,184.14

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Solution

The fourth proportional to 664,417.87, 996,772.15 and 215,184.14 is: 322,823.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,417.87 : 996,772.15 = 215,184.14 : x
  2. Step 2: Convert to fraction form
    664,417.87/996,772.15 = 215,184.14/x
  3. Step 3: Cross multiply
    664,417.87x = 996,772.15 × 215,184.14
  4. Step 4: Simplify right side
    664,417.87x = 214,489,562,503.56
  5. Step 5: Solve for x
    x = 214,489,562,503.56/664,417.87
  6. Step 6: Final answer
    x = 322,823.29

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1.5x scale

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.