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Finding the Fourth Proportional to 235,485.72, 324,978.83 and 134,903.16

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Solution

The fourth proportional to 235,485.72, 324,978.83 and 134,903.16 is: 186,171.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,485.72 : 324,978.83 = 134,903.16 : x
  2. Step 2: Convert to fraction form
    235,485.72/324,978.83 = 134,903.16/x
  3. Step 3: Cross multiply
    235,485.72x = 324,978.83 × 134,903.16
  4. Step 4: Simplify right side
    235,485.72x = 43,840,670,425.59
  5. Step 5: Solve for x
    x = 43,840,670,425.59/235,485.72
  6. Step 6: Final answer
    x = 186,171.25

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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.