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Finding the Fourth Proportional to 321,154.60, 481,804.80 and 187,966.30

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Solution

The fourth proportional to 321,154.60, 481,804.80 and 187,966.30 is: 281,992.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,154.60 : 481,804.80 = 187,966.30 : x
  2. Step 2: Convert to fraction form
    321,154.60/481,804.80 = 187,966.30/x
  3. Step 3: Cross multiply
    321,154.60x = 481,804.80 × 187,966.30
  4. Step 4: Simplify right side
    321,154.60x = 90,563,065,578.24
  5. Step 5: Solve for x
    x = 90,563,065,578.24/321,154.60
  6. Step 6: Final answer
    x = 281,992.12

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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.