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Finding the Fourth Proportional to 636,239.51, 954,334.35 and 215,515.38

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Solution

The fourth proportional to 636,239.51, 954,334.35 and 215,515.38 is: 323,264.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,239.51 : 954,334.35 = 215,515.38 : x
  2. Step 2: Convert to fraction form
    636,239.51/954,334.35 = 215,515.38/x
  3. Step 3: Cross multiply
    636,239.51x = 954,334.35 × 215,515.38
  4. Step 4: Simplify right side
    636,239.51x = 205,673,730,087.30
  5. Step 5: Solve for x
    x = 205,673,730,087.30/636,239.51
  6. Step 6: Final answer
    x = 323,264.63

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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.