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Finding the Fourth Proportional to 636,227.71, 954,316.63 and 215,503.57

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Solution

The fourth proportional to 636,227.71, 954,316.63 and 215,503.57 is: 323,246.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,227.71 : 954,316.63 = 215,503.57 : x
  2. Step 2: Convert to fraction form
    636,227.71/954,316.63 = 215,503.57/x
  3. Step 3: Cross multiply
    636,227.71x = 954,316.63 × 215,503.57
  4. Step 4: Simplify right side
    636,227.71x = 205,658,638,558.96
  5. Step 5: Solve for x
    x = 205,658,638,558.96/636,227.71
  6. Step 6: Final answer
    x = 323,246.91

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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.