Home / 255,150.10-382,961.57-128,878.85

Finding the Fourth Proportional to 255,150.10, 382,961.57 and 128,878.85

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Solution

The fourth proportional to 255,150.10, 382,961.57 and 128,878.85 is: 193,437.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,150.10 : 382,961.57 = 128,878.85 : x
  2. Step 2: Convert to fraction form
    255,150.10/382,961.57 = 128,878.85/x
  3. Step 3: Cross multiply
    255,150.10x = 382,961.57 × 128,878.85
  4. Step 4: Simplify right side
    255,150.10x = 49,355,648,015.40
  5. Step 5: Solve for x
    x = 49,355,648,015.40/255,150.10
  6. Step 6: Final answer
    x = 193,437.70

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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.