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Finding the Fourth Proportional to 326,620.29, 489,930.25 and 101,999.98

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Solution

The fourth proportional to 326,620.29, 489,930.25 and 101,999.98 is: 152,999.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,620.29 : 489,930.25 = 101,999.98 : x
  2. Step 2: Convert to fraction form
    326,620.29/489,930.25 = 101,999.98/x
  3. Step 3: Cross multiply
    326,620.29x = 489,930.25 × 101,999.98
  4. Step 4: Simplify right side
    326,620.29x = 49,972,875,701.40
  5. Step 5: Solve for x
    x = 49,972,875,701.40/326,620.29
  6. Step 6: Final answer
    x = 152,999.91

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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.