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Finding the Fourth Proportional to 636,240.51, 954,335.85 and 215,516.38

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Solution

The fourth proportional to 636,240.51, 954,335.85 and 215,516.38 is: 323,266.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,240.51 : 954,335.85 = 215,516.38 : x
  2. Step 2: Convert to fraction form
    636,240.51/954,335.85 = 215,516.38/x
  3. Step 3: Cross multiply
    636,240.51x = 954,335.85 × 215,516.38
  4. Step 4: Simplify right side
    636,240.51x = 205,675,007,696.22
  5. Step 5: Solve for x
    x = 205,675,007,696.22/636,240.51
  6. Step 6: Final answer
    x = 323,266.13

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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.