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Finding the Fourth Proportional to 235,449.42, 324,918.51 and 128,019.42

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Solution

The fourth proportional to 235,449.42, 324,918.51 and 128,019.42 is: 176,665.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,449.42 : 324,918.51 = 128,019.42 : x
  2. Step 2: Convert to fraction form
    235,449.42/324,918.51 = 128,019.42/x
  3. Step 3: Cross multiply
    235,449.42x = 324,918.51 × 128,019.42
  4. Step 4: Simplify right side
    235,449.42x = 41,595,879,197.46
  5. Step 5: Solve for x
    x = 41,595,879,197.46/235,449.42
  6. Step 6: Final answer
    x = 176,665.88

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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.