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Finding the Fourth Proportional to 326,526.39, 489,696.84 and 126,804.15

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Solution

The fourth proportional to 326,526.39, 489,696.84 and 126,804.15 is: 190,170.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,526.39 : 489,696.84 = 126,804.15 : x
  2. Step 2: Convert to fraction form
    326,526.39/489,696.84 = 126,804.15/x
  3. Step 3: Cross multiply
    326,526.39x = 489,696.84 × 126,804.15
  4. Step 4: Simplify right side
    326,526.39x = 62,095,591,553.89
  5. Step 5: Solve for x
    x = 62,095,591,553.89/326,526.39
  6. Step 6: Final answer
    x = 190,170.21

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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.