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Finding the Fourth Proportional to 235,670.56, 325,222.64 and 128,238.74

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Solution

The fourth proportional to 235,670.56, 325,222.64 and 128,238.74 is: 176,967.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,670.56 : 325,222.64 = 128,238.74 : x
  2. Step 2: Convert to fraction form
    235,670.56/325,222.64 = 128,238.74/x
  3. Step 3: Cross multiply
    235,670.56x = 325,222.64 × 128,238.74
  4. Step 4: Simplify right side
    235,670.56x = 41,706,141,573.07
  5. Step 5: Solve for x
    x = 41,706,141,573.07/235,670.56
  6. Step 6: Final answer
    x = 176,967.97

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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.