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Finding the Fourth Proportional to 255,634.40, 383,451.60 and 210,533.60

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Solution

The fourth proportional to 255,634.40, 383,451.60 and 210,533.60 is: 315,800.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,634.40 : 383,451.60 = 210,533.60 : x
  2. Step 2: Convert to fraction form
    255,634.40/383,451.60 = 210,533.60/x
  3. Step 3: Cross multiply
    255,634.40x = 383,451.60 × 210,533.60
  4. Step 4: Simplify right side
    255,634.40x = 80,729,445,773.76
  5. Step 5: Solve for x
    x = 80,729,445,773.76/255,634.40
  6. Step 6: Final answer
    x = 315,800.40

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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.