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Finding the Fourth Proportional to 256,248.60, 384,039.45 and 104,268.53

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Solution

The fourth proportional to 256,248.60, 384,039.45 and 104,268.53 is: 156,267.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,248.60 : 384,039.45 = 104,268.53 : x
  2. Step 2: Convert to fraction form
    256,248.60/384,039.45 = 104,268.53/x
  3. Step 3: Cross multiply
    256,248.60x = 384,039.45 × 104,268.53
  4. Step 4: Simplify right side
    256,248.60x = 40,043,226,993.31
  5. Step 5: Solve for x
    x = 40,043,226,993.31/256,248.60
  6. Step 6: Final answer
    x = 156,267.11

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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.