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Finding the Fourth Proportional to 278,900.54, 418,522.54 and 110,392.20

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Solution

The fourth proportional to 278,900.54, 418,522.54 and 110,392.20 is: 165,656.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,900.54 : 418,522.54 = 110,392.20 : x
  2. Step 2: Convert to fraction form
    278,900.54/418,522.54 = 110,392.20/x
  3. Step 3: Cross multiply
    278,900.54x = 418,522.54 × 110,392.20
  4. Step 4: Simplify right side
    278,900.54x = 46,201,623,940.19
  5. Step 5: Solve for x
    x = 46,201,623,940.19/278,900.54
  6. Step 6: Final answer
    x = 165,656.27

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1.5x scale

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.