Home / 340,921.85-511,382.50-91,603.85

Finding the Fourth Proportional to 340,921.85, 511,382.50 and 91,603.85

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Solution

The fourth proportional to 340,921.85, 511,382.50 and 91,603.85 is: 137,405.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,921.85 : 511,382.50 = 91,603.85 : x
  2. Step 2: Convert to fraction form
    340,921.85/511,382.50 = 91,603.85/x
  3. Step 3: Cross multiply
    340,921.85x = 511,382.50 × 91,603.85
  4. Step 4: Simplify right side
    340,921.85x = 46,844,603,036.70
  5. Step 5: Solve for x
    x = 46,844,603,036.70/340,921.85
  6. Step 6: Final answer
    x = 137,405.69

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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.