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Finding the Fourth Proportional to 326,205.51, 489,190.83 and 112,915.47

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Solution

The fourth proportional to 326,205.51, 489,190.83 and 112,915.47 is: 169,332.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,205.51 : 489,190.83 = 112,915.47 : x
  2. Step 2: Convert to fraction form
    326,205.51/489,190.83 = 112,915.47/x
  3. Step 3: Cross multiply
    326,205.51x = 489,190.83 × 112,915.47
  4. Step 4: Simplify right side
    326,205.51x = 55,237,212,489.14
  5. Step 5: Solve for x
    x = 55,237,212,489.14/326,205.51
  6. Step 6: Final answer
    x = 169,332.56

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1.5x scale

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.