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Finding the Fourth Proportional to 289,075.54, 398,659.22 and 248,225.80

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Solution

The fourth proportional to 289,075.54, 398,659.22 and 248,225.80 is: 342,324.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,075.54 : 398,659.22 = 248,225.80 : x
  2. Step 2: Convert to fraction form
    289,075.54/398,659.22 = 248,225.80/x
  3. Step 3: Cross multiply
    289,075.54x = 398,659.22 × 248,225.80
  4. Step 4: Simplify right side
    289,075.54x = 98,957,503,811.88
  5. Step 5: Solve for x
    x = 98,957,503,811.88/289,075.54
  6. Step 6: Final answer
    x = 342,324.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.