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Finding the Fourth Proportional to 255,951.60, 383,927.40 and 122,809.20

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Solution

The fourth proportional to 255,951.60, 383,927.40 and 122,809.20 is: 184,213.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,951.60 : 383,927.40 = 122,809.20 : x
  2. Step 2: Convert to fraction form
    255,951.60/383,927.40 = 122,809.20/x
  3. Step 3: Cross multiply
    255,951.60x = 383,927.40 × 122,809.20
  4. Step 4: Simplify right side
    255,951.60x = 47,149,816,852.08
  5. Step 5: Solve for x
    x = 47,149,816,852.08/255,951.60
  6. Step 6: Final answer
    x = 184,213.80

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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.