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Finding the Fourth Proportional to 270,447.60, 405,709.80 and 83,439.60

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Solution

The fourth proportional to 270,447.60, 405,709.80 and 83,439.60 is: 125,171.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,447.60 : 405,709.80 = 83,439.60 : x
  2. Step 2: Convert to fraction form
    270,447.60/405,709.80 = 83,439.60/x
  3. Step 3: Cross multiply
    270,447.60x = 405,709.80 × 83,439.60
  4. Step 4: Simplify right side
    270,447.60x = 33,852,263,428.08
  5. Step 5: Solve for x
    x = 33,852,263,428.08/270,447.60
  6. Step 6: Final answer
    x = 125,171.25

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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.