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Finding the Fourth Proportional to 359,271.20, 538,906.80 and 326,028.80

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Solution

The fourth proportional to 359,271.20, 538,906.80 and 326,028.80 is: 489,043.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,271.20 : 538,906.80 = 326,028.80 : x
  2. Step 2: Convert to fraction form
    359,271.20/538,906.80 = 326,028.80/x
  3. Step 3: Cross multiply
    359,271.20x = 538,906.80 × 326,028.80
  4. Step 4: Simplify right side
    359,271.20x = 175,699,137,315.84
  5. Step 5: Solve for x
    x = 175,699,137,315.84/359,271.20
  6. Step 6: Final answer
    x = 489,043.20

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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.