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Finding the Fourth Proportional to 255,371.84, 383,057.76 and 130,644.80

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Solution

The fourth proportional to 255,371.84, 383,057.76 and 130,644.80 is: 195,967.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,371.84 : 383,057.76 = 130,644.80 : x
  2. Step 2: Convert to fraction form
    255,371.84/383,057.76 = 130,644.80/x
  3. Step 3: Cross multiply
    255,371.84x = 383,057.76 × 130,644.80
  4. Step 4: Simplify right side
    255,371.84x = 50,044,504,443.65
  5. Step 5: Solve for x
    x = 50,044,504,443.65/255,371.84
  6. Step 6: Final answer
    x = 195,967.20

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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.