Home / 235,915.43-325,567.00-128,485.38

Finding the Fourth Proportional to 235,915.43, 325,567.00 and 128,485.38

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Solution

The fourth proportional to 235,915.43, 325,567.00 and 128,485.38 is: 177,311.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,915.43 : 325,567.00 = 128,485.38 : x
  2. Step 2: Convert to fraction form
    235,915.43/325,567.00 = 128,485.38/x
  3. Step 3: Cross multiply
    235,915.43x = 325,567.00 × 128,485.38
  4. Step 4: Simplify right side
    235,915.43x = 41,830,598,168.37
  5. Step 5: Solve for x
    x = 41,830,598,168.37/235,915.43
  6. Step 6: Final answer
    x = 177,311.84

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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.