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Finding the Fourth Proportional to 235,951.74, 325,618.38 and 128,521.52

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Solution

The fourth proportional to 235,951.74, 325,618.38 and 128,521.52 is: 177,362.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,951.74 : 325,618.38 = 128,521.52 : x
  2. Step 2: Convert to fraction form
    235,951.74/325,618.38 = 128,521.52/x
  3. Step 3: Cross multiply
    235,951.74x = 325,618.38 × 128,521.52
  4. Step 4: Simplify right side
    235,951.74x = 41,848,967,509.45
  5. Step 5: Solve for x
    x = 41,848,967,509.45/235,951.74
  6. Step 6: Final answer
    x = 177,362.40

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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.