Home / 312,105.74-430,583.37-181,261.12

Finding the Fourth Proportional to 312,105.74, 430,583.37 and 181,261.12

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Solution

The fourth proportional to 312,105.74, 430,583.37 and 181,261.12 is: 250,069.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,105.74 : 430,583.37 = 181,261.12 : x
  2. Step 2: Convert to fraction form
    312,105.74/430,583.37 = 181,261.12/x
  3. Step 3: Cross multiply
    312,105.74x = 430,583.37 × 181,261.12
  4. Step 4: Simplify right side
    312,105.74x = 78,048,021,746.66
  5. Step 5: Solve for x
    x = 78,048,021,746.66/312,105.74
  6. Step 6: Final answer
    x = 250,069.17

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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.