Home / 255,621.60-383,432.40-238,125.60

Finding the Fourth Proportional to 255,621.60, 383,432.40 and 238,125.60

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Solution

The fourth proportional to 255,621.60, 383,432.40 and 238,125.60 is: 357,188.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,621.60 : 383,432.40 = 238,125.60 : x
  2. Step 2: Convert to fraction form
    255,621.60/383,432.40 = 238,125.60/x
  3. Step 3: Cross multiply
    255,621.60x = 383,432.40 × 238,125.60
  4. Step 4: Simplify right side
    255,621.60x = 91,305,070,309.44
  5. Step 5: Solve for x
    x = 91,305,070,309.44/255,621.60
  6. Step 6: Final answer
    x = 357,188.40

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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.