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Finding the Fourth Proportional to 289,070.97, 398,654.34 and 248,222.26

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Solution

The fourth proportional to 289,070.97, 398,654.34 and 248,222.26 is: 342,320.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,070.97 : 398,654.34 = 248,222.26 : x
  2. Step 2: Convert to fraction form
    289,070.97/398,654.34 = 248,222.26/x
  3. Step 3: Cross multiply
    289,070.97x = 398,654.34 × 248,222.26
  4. Step 4: Simplify right side
    289,070.97x = 98,954,880,801.09
  5. Step 5: Solve for x
    x = 98,954,880,801.09/289,070.97
  6. Step 6: Final answer
    x = 342,320.37

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1.5x scale

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.