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Finding the Fourth Proportional to 808,900.80, 1,213,408.80 and 247,934.40

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Solution

The fourth proportional to 808,900.80, 1,213,408.80 and 247,934.40 is: 371,919.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,900.80 : 1,213,408.80 = 247,934.40 : x
  2. Step 2: Convert to fraction form
    808,900.80/1,213,408.80 = 247,934.40/x
  3. Step 3: Cross multiply
    808,900.80x = 1,213,408.80 × 247,934.40
  4. Step 4: Simplify right side
    808,900.80x = 300,845,782,782.72
  5. Step 5: Solve for x
    x = 300,845,782,782.72/808,900.80
  6. Step 6: Final answer
    x = 371,919.25

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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.