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Finding the Fourth Proportional to 256,455.60, 384,683.40 and 252,956.40

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Solution

The fourth proportional to 256,455.60, 384,683.40 and 252,956.40 is: 379,434.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,455.60 : 384,683.40 = 252,956.40 : x
  2. Step 2: Convert to fraction form
    256,455.60/384,683.40 = 252,956.40/x
  3. Step 3: Cross multiply
    256,455.60x = 384,683.40 × 252,956.40
  4. Step 4: Simplify right side
    256,455.60x = 97,308,128,003.76
  5. Step 5: Solve for x
    x = 97,308,128,003.76/256,455.60
  6. Step 6: Final answer
    x = 379,434.60

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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.