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Finding the Fourth Proportional to 305,578.80, 457,493.40 and 187,480.80

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Solution

The fourth proportional to 305,578.80, 457,493.40 and 187,480.80 is: 280,684.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,578.80 : 457,493.40 = 187,480.80 : x
  2. Step 2: Convert to fraction form
    305,578.80/457,493.40 = 187,480.80/x
  3. Step 3: Cross multiply
    305,578.80x = 457,493.40 × 187,480.80
  4. Step 4: Simplify right side
    305,578.80x = 85,771,228,626.72
  5. Step 5: Solve for x
    x = 85,771,228,626.72/305,578.80
  6. Step 6: Final answer
    x = 280,684.49

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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.