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Finding the Fourth Proportional to 278,043.80, 417,065.70 and 165,850.70

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Solution

The fourth proportional to 278,043.80, 417,065.70 and 165,850.70 is: 248,776.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,043.80 : 417,065.70 = 165,850.70 : x
  2. Step 2: Convert to fraction form
    278,043.80/417,065.70 = 165,850.70/x
  3. Step 3: Cross multiply
    278,043.80x = 417,065.70 × 165,850.70
  4. Step 4: Simplify right side
    278,043.80x = 69,170,638,290.99
  5. Step 5: Solve for x
    x = 69,170,638,290.99/278,043.80
  6. Step 6: Final answer
    x = 248,776.05

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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.