Home / 312,180.06-430,809.56-168,940.07

Finding the Fourth Proportional to 312,180.06, 430,809.56 and 168,940.07

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Solution

The fourth proportional to 312,180.06, 430,809.56 and 168,940.07 is: 233,137.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,180.06 : 430,809.56 = 168,940.07 : x
  2. Step 2: Convert to fraction form
    312,180.06/430,809.56 = 168,940.07/x
  3. Step 3: Cross multiply
    312,180.06x = 430,809.56 × 168,940.07
  4. Step 4: Simplify right side
    312,180.06x = 72,780,994,224.32
  5. Step 5: Solve for x
    x = 72,780,994,224.32/312,180.06
  6. Step 6: Final answer
    x = 233,137.87

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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.