Home / 325,821.20-488,756.10-115,431.80

Finding the Fourth Proportional to 325,821.20, 488,756.10 and 115,431.80

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Solution

The fourth proportional to 325,821.20, 488,756.10 and 115,431.80 is: 173,156.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,821.20 : 488,756.10 = 115,431.80 : x
  2. Step 2: Convert to fraction form
    325,821.20/488,756.10 = 115,431.80/x
  3. Step 3: Cross multiply
    325,821.20x = 488,756.10 × 115,431.80
  4. Step 4: Simplify right side
    325,821.20x = 56,417,996,383.98
  5. Step 5: Solve for x
    x = 56,417,996,383.98/325,821.20
  6. Step 6: Final answer
    x = 173,156.31

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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.