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Finding the Fourth Proportional to 326,533.40, 489,707.32 and 126,811.16

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Solution

The fourth proportional to 326,533.40, 489,707.32 and 126,811.16 is: 190,180.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,533.40 : 489,707.32 = 126,811.16 : x
  2. Step 2: Convert to fraction form
    326,533.40/489,707.32 = 126,811.16/x
  3. Step 3: Cross multiply
    326,533.40x = 489,707.32 × 126,811.16
  4. Step 4: Simplify right side
    326,533.40x = 62,100,353,309.69
  5. Step 5: Solve for x
    x = 62,100,353,309.69/326,533.40
  6. Step 6: Final answer
    x = 190,180.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.