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Finding the Fourth Proportional to 636,230.77, 954,321.22 and 215,506.63

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Solution

The fourth proportional to 636,230.77, 954,321.22 and 215,506.63 is: 323,251.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,230.77 : 954,321.22 = 215,506.63 : x
  2. Step 2: Convert to fraction form
    636,230.77/954,321.22 = 215,506.63/x
  3. Step 3: Cross multiply
    636,230.77x = 954,321.22 × 215,506.63
  4. Step 4: Simplify right side
    636,230.77x = 205,662,550,059.69
  5. Step 5: Solve for x
    x = 205,662,550,059.69/636,230.77
  6. Step 6: Final answer
    x = 323,251.50

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Double scale
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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.