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Finding the Fourth Proportional to 216,951, 325,432.26 and 69,207

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Solution

The fourth proportional to 216,951, 325,432.26 and 69,207 is: 103,812.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,951 : 325,432.26 = 69,207 : x
  2. Step 2: Convert to fraction form
    216,951/325,432.26 = 69,207/x
  3. Step 3: Cross multiply
    216,951x = 325,432.26 × 69,207
  4. Step 4: Simplify right side
    216,951x = 22,522,190,417.82
  5. Step 5: Solve for x
    x = 22,522,190,417.82/216,951
  6. Step 6: Final answer
    x = 103,812.34

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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.