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Finding the Fourth Proportional to 298,709.40, 448,064.10 and 275,899.80

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Solution

The fourth proportional to 298,709.40, 448,064.10 and 275,899.80 is: 413,849.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,709.40 : 448,064.10 = 275,899.80 : x
  2. Step 2: Convert to fraction form
    298,709.40/448,064.10 = 275,899.80/x
  3. Step 3: Cross multiply
    298,709.40x = 448,064.10 × 275,899.80
  4. Step 4: Simplify right side
    298,709.40x = 123,620,795,577.18
  5. Step 5: Solve for x
    x = 123,620,795,577.18/298,709.40
  6. Step 6: Final answer
    x = 413,849.70

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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.