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Finding the Fourth Proportional to 326,614, 489,921 and 104,998

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Solution

The fourth proportional to 326,614, 489,921 and 104,998 is: 157,497

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,614 : 489,921 = 104,998 : x
  2. Step 2: Convert to fraction form
    326,614/489,921 = 104,998/x
  3. Step 3: Cross multiply
    326,614x = 489,921 × 104,998
  4. Step 4: Simplify right side
    326,614x = 51,440,725,158
  5. Step 5: Solve for x
    x = 51,440,725,158/326,614
  6. Step 6: Final answer
    x = 157,497

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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.