Home / 235,440.09-324,905.67-128,010.15

Finding the Fourth Proportional to 235,440.09, 324,905.67 and 128,010.15

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Solution

The fourth proportional to 235,440.09, 324,905.67 and 128,010.15 is: 176,653.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,440.09 : 324,905.67 = 128,010.15 : x
  2. Step 2: Convert to fraction form
    235,440.09/324,905.67 = 128,010.15/x
  3. Step 3: Cross multiply
    235,440.09x = 324,905.67 × 128,010.15
  4. Step 4: Simplify right side
    235,440.09x = 41,591,223,552.55
  5. Step 5: Solve for x
    x = 41,591,223,552.55/235,440.09
  6. Step 6: Final answer
    x = 176,653.11

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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.