Home / 345,120.15-517,766.09-274,309.95

Finding the Fourth Proportional to 345,120.15, 517,766.09 and 274,309.95

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Solution

The fourth proportional to 345,120.15, 517,766.09 and 274,309.95 is: 411,533.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,120.15 : 517,766.09 = 274,309.95 : x
  2. Step 2: Convert to fraction form
    345,120.15/517,766.09 = 274,309.95/x
  3. Step 3: Cross multiply
    345,120.15x = 517,766.09 × 274,309.95
  4. Step 4: Simplify right side
    345,120.15x = 142,028,388,888.05
  5. Step 5: Solve for x
    x = 142,028,388,888.05/345,120.15
  6. Step 6: Final answer
    x = 411,533.17

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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.