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Finding the Fourth Proportional to 256,536.74, 384,455.19 and 156,731.78

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Solution

The fourth proportional to 256,536.74, 384,455.19 and 156,731.78 is: 234,883.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,536.74 : 384,455.19 = 156,731.78 : x
  2. Step 2: Convert to fraction form
    256,536.74/384,455.19 = 156,731.78/x
  3. Step 3: Cross multiply
    256,536.74x = 384,455.19 × 156,731.78
  4. Step 4: Simplify right side
    256,536.74x = 60,256,346,258.94
  5. Step 5: Solve for x
    x = 60,256,346,258.94/256,536.74
  6. Step 6: Final answer
    x = 234,883.89

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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.