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Finding the Fourth Proportional to 326,533.14, 489,706.97 and 126,810.90

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Solution

The fourth proportional to 326,533.14, 489,706.97 and 126,810.90 is: 190,180.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,533.14 : 489,706.97 = 126,810.90 : x
  2. Step 2: Convert to fraction form
    326,533.14/489,706.97 = 126,810.90/x
  3. Step 3: Cross multiply
    326,533.14x = 489,706.97 × 126,810.90
  4. Step 4: Simplify right side
    326,533.14x = 62,100,180,967.92
  5. Step 5: Solve for x
    x = 62,100,180,967.92/326,533.14
  6. Step 6: Final answer
    x = 190,180.33

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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.