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Finding the Fourth Proportional to 303,300.90, 455,279.40 and 191,107.80

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Solution

The fourth proportional to 303,300.90, 455,279.40 and 191,107.80 is: 286,868.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,300.90 : 455,279.40 = 191,107.80 : x
  2. Step 2: Convert to fraction form
    303,300.90/455,279.40 = 191,107.80/x
  3. Step 3: Cross multiply
    303,300.90x = 455,279.40 × 191,107.80
  4. Step 4: Simplify right side
    303,300.90x = 87,007,444,519.32
  5. Step 5: Solve for x
    x = 87,007,444,519.32/303,300.90
  6. Step 6: Final answer
    x = 286,868.40

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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.