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Finding the Fourth Proportional to 256,021.60, 383,859.60 and 136,098.40

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Solution

The fourth proportional to 256,021.60, 383,859.60 and 136,098.40 is: 204,055.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,021.60 : 383,859.60 = 136,098.40 : x
  2. Step 2: Convert to fraction form
    256,021.60/383,859.60 = 136,098.40/x
  3. Step 3: Cross multiply
    256,021.60x = 383,859.60 × 136,098.40
  4. Step 4: Simplify right side
    256,021.60x = 52,242,677,384.64
  5. Step 5: Solve for x
    x = 52,242,677,384.64/256,021.60
  6. Step 6: Final answer
    x = 204,055.74

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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.