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Finding the Fourth Proportional to 303,401.80, 455,477.10 and 191,081.80

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Solution

The fourth proportional to 303,401.80, 455,477.10 and 191,081.80 is: 286,858.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,401.80 : 455,477.10 = 191,081.80 : x
  2. Step 2: Convert to fraction form
    303,401.80/455,477.10 = 191,081.80/x
  3. Step 3: Cross multiply
    303,401.80x = 455,477.10 × 191,081.80
  4. Step 4: Simplify right side
    303,401.80x = 87,033,384,126.78
  5. Step 5: Solve for x
    x = 87,033,384,126.78/303,401.80
  6. Step 6: Final answer
    x = 286,858.50

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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.