Home / 255,631.80-383,447.70-148,906.20

Finding the Fourth Proportional to 255,631.80, 383,447.70 and 148,906.20

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Solution

The fourth proportional to 255,631.80, 383,447.70 and 148,906.20 is: 223,359.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,631.80 : 383,447.70 = 148,906.20 : x
  2. Step 2: Convert to fraction form
    255,631.80/383,447.70 = 148,906.20/x
  3. Step 3: Cross multiply
    255,631.80x = 383,447.70 × 148,906.20
  4. Step 4: Simplify right side
    255,631.80x = 57,097,739,905.74
  5. Step 5: Solve for x
    x = 57,097,739,905.74/255,631.80
  6. Step 6: Final answer
    x = 223,359.30

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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.