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Finding the Fourth Proportional to 235,665.46, 325,213.01 and 128,235.79

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Solution

The fourth proportional to 235,665.46, 325,213.01 and 128,235.79 is: 176,962.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,665.46 : 325,213.01 = 128,235.79 : x
  2. Step 2: Convert to fraction form
    235,665.46/325,213.01 = 128,235.79/x
  3. Step 3: Cross multiply
    235,665.46x = 325,213.01 × 128,235.79
  4. Step 4: Simplify right side
    235,665.46x = 41,703,945,629.56
  5. Step 5: Solve for x
    x = 41,703,945,629.56/235,665.46
  6. Step 6: Final answer
    x = 176,962.49

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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.