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Finding the Fourth Proportional to 255,630.80, 383,446.20 and 148,905.20

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Solution

The fourth proportional to 255,630.80, 383,446.20 and 148,905.20 is: 223,357.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,630.80 : 383,446.20 = 148,905.20 : x
  2. Step 2: Convert to fraction form
    255,630.80/383,446.20 = 148,905.20/x
  3. Step 3: Cross multiply
    255,630.80x = 383,446.20 × 148,905.20
  4. Step 4: Simplify right side
    255,630.80x = 57,097,133,100.24
  5. Step 5: Solve for x
    x = 57,097,133,100.24/255,630.80
  6. Step 6: Final answer
    x = 223,357.80

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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.