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Finding the Fourth Proportional to 235,884.70, 325,521.24 and 128,455.18

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Solution

The fourth proportional to 235,884.70, 325,521.24 and 128,455.18 is: 177,268.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,884.70 : 325,521.24 = 128,455.18 : x
  2. Step 2: Convert to fraction form
    235,884.70/325,521.24 = 128,455.18/x
  3. Step 3: Cross multiply
    235,884.70x = 325,521.24 × 128,455.18
  4. Step 4: Simplify right side
    235,884.70x = 41,814,889,478.02
  5. Step 5: Solve for x
    x = 41,814,889,478.02/235,884.70
  6. Step 6: Final answer
    x = 177,268.34

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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.