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Finding the Fourth Proportional to 256,254.81, 384,383.60 and 168,066.78

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Solution

The fourth proportional to 256,254.81, 384,383.60 and 168,066.78 is: 252,101.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,254.81 : 384,383.60 = 168,066.78 : x
  2. Step 2: Convert to fraction form
    256,254.81/384,383.60 = 168,066.78/x
  3. Step 3: Cross multiply
    256,254.81x = 384,383.60 × 168,066.78
  4. Step 4: Simplify right side
    256,254.81x = 64,602,113,096.47
  5. Step 5: Solve for x
    x = 64,602,113,096.47/256,254.81
  6. Step 6: Final answer
    x = 252,101.08

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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.