Home / 211,037.12-291,231.20-115,543.78

Finding the Fourth Proportional to 211,037.12, 291,231.20 and 115,543.78

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Solution

The fourth proportional to 211,037.12, 291,231.20 and 115,543.78 is: 159,450.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,037.12 : 291,231.20 = 115,543.78 : x
  2. Step 2: Convert to fraction form
    211,037.12/291,231.20 = 115,543.78/x
  3. Step 3: Cross multiply
    211,037.12x = 291,231.20 × 115,543.78
  4. Step 4: Simplify right side
    211,037.12x = 33,649,953,701.94
  5. Step 5: Solve for x
    x = 33,649,953,701.94/211,037.12
  6. Step 6: Final answer
    x = 159,450.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.