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Finding the Fourth Proportional to 326,532.52, 489,610.20 and 126,619.36

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Solution

The fourth proportional to 326,532.52, 489,610.20 and 126,619.36 is: 189,855.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,532.52 : 489,610.20 = 126,619.36 : x
  2. Step 2: Convert to fraction form
    326,532.52/489,610.20 = 126,619.36/x
  3. Step 3: Cross multiply
    326,532.52x = 489,610.20 × 126,619.36
  4. Step 4: Simplify right side
    326,532.52x = 61,994,130,173.47
  5. Step 5: Solve for x
    x = 61,994,130,173.47/326,532.52
  6. Step 6: Final answer
    x = 189,855.91

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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.