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Finding the Fourth Proportional to 235,670.33, 325,219.74 and 128,240.66

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Solution

The fourth proportional to 235,670.33, 325,219.74 and 128,240.66 is: 176,969.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,670.33 : 325,219.74 = 128,240.66 : x
  2. Step 2: Convert to fraction form
    235,670.33/325,219.74 = 128,240.66/x
  3. Step 3: Cross multiply
    235,670.33x = 325,219.74 × 128,240.66
  4. Step 4: Simplify right side
    235,670.33x = 41,706,394,102.63
  5. Step 5: Solve for x
    x = 41,706,394,102.63/235,670.33
  6. Step 6: Final answer
    x = 176,969.22

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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.