Home / 291,091.20-436,636.80-197,779.20

Finding the Fourth Proportional to 291,091.20, 436,636.80 and 197,779.20

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Solution

The fourth proportional to 291,091.20, 436,636.80 and 197,779.20 is: 296,668.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,091.20 : 436,636.80 = 197,779.20 : x
  2. Step 2: Convert to fraction form
    291,091.20/436,636.80 = 197,779.20/x
  3. Step 3: Cross multiply
    291,091.20x = 436,636.80 × 197,779.20
  4. Step 4: Simplify right side
    291,091.20x = 86,357,676,994.56
  5. Step 5: Solve for x
    x = 86,357,676,994.56/291,091.20
  6. Step 6: Final answer
    x = 296,668.80

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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.