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Finding the Fourth Proportional to 353,422.80, 528,967.80 and 274,107.60

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Solution

The fourth proportional to 353,422.80, 528,967.80 and 274,107.60 is: 410,256.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,422.80 : 528,967.80 = 274,107.60 : x
  2. Step 2: Convert to fraction form
    353,422.80/528,967.80 = 274,107.60/x
  3. Step 3: Cross multiply
    353,422.80x = 528,967.80 × 274,107.60
  4. Step 4: Simplify right side
    353,422.80x = 144,994,094,135.28
  5. Step 5: Solve for x
    x = 144,994,094,135.28/353,422.80
  6. Step 6: Final answer
    x = 410,256.76

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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.