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Finding the Fourth Proportional to 326,371.50, 490,307.72 and 231,831.54

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Solution

The fourth proportional to 326,371.50, 490,307.72 and 231,831.54 is: 348,280.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,371.50 : 490,307.72 = 231,831.54 : x
  2. Step 2: Convert to fraction form
    326,371.50/490,307.72 = 231,831.54/x
  3. Step 3: Cross multiply
    326,371.50x = 490,307.72 × 231,831.54
  4. Step 4: Simplify right side
    326,371.50x = 113,668,792,642.33
  5. Step 5: Solve for x
    x = 113,668,792,642.33/326,371.50
  6. Step 6: Final answer
    x = 348,280.39

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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.