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Finding the Fourth Proportional to 255,458.60, 383,255.21 and 127,412.48

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Solution

The fourth proportional to 255,458.60, 383,255.21 and 127,412.48 is: 191,152.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,458.60 : 383,255.21 = 127,412.48 : x
  2. Step 2: Convert to fraction form
    255,458.60/383,255.21 = 127,412.48/x
  3. Step 3: Cross multiply
    255,458.60x = 383,255.21 × 127,412.48
  4. Step 4: Simplify right side
    255,458.60x = 48,831,494,225.68
  5. Step 5: Solve for x
    x = 48,831,494,225.68/255,458.60
  6. Step 6: Final answer
    x = 191,152.29

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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.