Home / 309,591.45-427,240.55-187,066.83

Finding the Fourth Proportional to 309,591.45, 427,240.55 and 187,066.83

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Solution

The fourth proportional to 309,591.45, 427,240.55 and 187,066.83 is: 258,154.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,591.45 : 427,240.55 = 187,066.83 : x
  2. Step 2: Convert to fraction form
    309,591.45/427,240.55 = 187,066.83/x
  3. Step 3: Cross multiply
    309,591.45x = 427,240.55 × 187,066.83
  4. Step 4: Simplify right side
    309,591.45x = 79,922,534,400.62
  5. Step 5: Solve for x
    x = 79,922,534,400.62/309,591.45
  6. Step 6: Final answer
    x = 258,154.85

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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.