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Finding the Fourth Proportional to 255,965.60, 383,775.60 and 136,042.40

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Solution

The fourth proportional to 255,965.60, 383,775.60 and 136,042.40 is: 203,971.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,965.60 : 383,775.60 = 136,042.40 : x
  2. Step 2: Convert to fraction form
    255,965.60/383,775.60 = 136,042.40/x
  3. Step 3: Cross multiply
    255,965.60x = 383,775.60 × 136,042.40
  4. Step 4: Simplify right side
    255,965.60x = 52,209,753,685.44
  5. Step 5: Solve for x
    x = 52,209,753,685.44/255,965.60
  6. Step 6: Final answer
    x = 203,971.76

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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.