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Finding the Fourth Proportional to 616,901.27, 925,125.25 and 211,978.64

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Solution

The fourth proportional to 616,901.27, 925,125.25 and 211,978.64 is: 317,890.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,901.27 : 925,125.25 = 211,978.64 : x
  2. Step 2: Convert to fraction form
    616,901.27/925,125.25 = 211,978.64/x
  3. Step 3: Cross multiply
    616,901.27x = 925,125.25 × 211,978.64
  4. Step 4: Simplify right side
    616,901.27x = 196,106,792,324.66
  5. Step 5: Solve for x
    x = 196,106,792,324.66/616,901.27
  6. Step 6: Final answer
    x = 317,890.08

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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.