Home / 255,313.85-382,971.20-105,389.52

Finding the Fourth Proportional to 255,313.85, 382,971.20 and 105,389.52

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Solution

The fourth proportional to 255,313.85, 382,971.20 and 105,389.52 is: 158,084.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,313.85 : 382,971.20 = 105,389.52 : x
  2. Step 2: Convert to fraction form
    255,313.85/382,971.20 = 105,389.52/x
  3. Step 3: Cross multiply
    255,313.85x = 382,971.20 × 105,389.52
  4. Step 4: Simplify right side
    255,313.85x = 40,361,150,414.88
  5. Step 5: Solve for x
    x = 40,361,150,414.88/255,313.85
  6. Step 6: Final answer
    x = 158,084.46

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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.