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Finding the Fourth Proportional to 255,338.66, 383,068.74 and 128,667.62

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Solution

The fourth proportional to 255,338.66, 383,068.74 and 128,667.62 is: 193,032.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,338.66 : 383,068.74 = 128,667.62 : x
  2. Step 2: Convert to fraction form
    255,338.66/383,068.74 = 128,667.62/x
  3. Step 3: Cross multiply
    255,338.66x = 383,068.74 × 128,667.62
  4. Step 4: Simplify right side
    255,338.66x = 49,288,543,072.20
  5. Step 5: Solve for x
    x = 49,288,543,072.20/255,338.66
  6. Step 6: Final answer
    x = 193,032.04

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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.