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Finding the Fourth Proportional to 664,395.58, 996,752.11 and 215,116.94

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Solution

The fourth proportional to 664,395.58, 996,752.11 and 215,116.94 is: 322,726.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,395.58 : 996,752.11 = 215,116.94 : x
  2. Step 2: Convert to fraction form
    664,395.58/996,752.11 = 215,116.94/x
  3. Step 3: Cross multiply
    664,395.58x = 996,752.11 × 215,116.94
  4. Step 4: Simplify right side
    664,395.58x = 214,418,263,841.74
  5. Step 5: Solve for x
    x = 214,418,263,841.74/664,395.58
  6. Step 6: Final answer
    x = 322,726.81

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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.