Home / 261,321.18-391,813.29-111,659.10

Finding the Fourth Proportional to 261,321.18, 391,813.29 and 111,659.10

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Solution

The fourth proportional to 261,321.18, 391,813.29 and 111,659.10 is: 167,416.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,321.18 : 391,813.29 = 111,659.10 : x
  2. Step 2: Convert to fraction form
    261,321.18/391,813.29 = 111,659.10/x
  3. Step 3: Cross multiply
    261,321.18x = 391,813.29 × 111,659.10
  4. Step 4: Simplify right side
    261,321.18x = 43,749,519,329.44
  5. Step 5: Solve for x
    x = 43,749,519,329.44/261,321.18
  6. Step 6: Final answer
    x = 167,416.66

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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.