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Finding the Fourth Proportional to 255,852.80, 383,606.40 and 131,091.20

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Solution

The fourth proportional to 255,852.80, 383,606.40 and 131,091.20 is: 196,548.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,852.80 : 383,606.40 = 131,091.20 : x
  2. Step 2: Convert to fraction form
    255,852.80/383,606.40 = 131,091.20/x
  3. Step 3: Cross multiply
    255,852.80x = 383,606.40 × 131,091.20
  4. Step 4: Simplify right side
    255,852.80x = 50,287,423,303.68
  5. Step 5: Solve for x
    x = 50,287,423,303.68/255,852.80
  6. Step 6: Final answer
    x = 196,548.26

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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.