Home / 255,283.43-383,161.55-129,012.53

Finding the Fourth Proportional to 255,283.43, 383,161.55 and 129,012.53

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Solution

The fourth proportional to 255,283.43, 383,161.55 and 129,012.53 is: 193,638.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,283.43 : 383,161.55 = 129,012.53 : x
  2. Step 2: Convert to fraction form
    255,283.43/383,161.55 = 129,012.53/x
  3. Step 3: Cross multiply
    255,283.43x = 383,161.55 × 129,012.53
  4. Step 4: Simplify right side
    255,283.43x = 49,432,638,403.35
  5. Step 5: Solve for x
    x = 49,432,638,403.35/255,283.43
  6. Step 6: Final answer
    x = 193,638.26

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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.