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Finding the Fourth Proportional to 255,612.60, 383,856.30 and 247,739.40

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Solution

The fourth proportional to 255,612.60, 383,856.30 and 247,739.40 is: 372,033.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,612.60 : 383,856.30 = 247,739.40 : x
  2. Step 2: Convert to fraction form
    255,612.60/383,856.30 = 247,739.40/x
  3. Step 3: Cross multiply
    255,612.60x = 383,856.30 × 247,739.40
  4. Step 4: Simplify right side
    255,612.60x = 95,096,329,448.22
  5. Step 5: Solve for x
    x = 95,096,329,448.22/255,612.60
  6. Step 6: Final answer
    x = 372,033.03

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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.