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Finding the Fourth Proportional to 165,606.40, 248,409.60 and 40,947.40

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Solution

The fourth proportional to 165,606.40, 248,409.60 and 40,947.40 is: 61,421.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,606.40 : 248,409.60 = 40,947.40 : x
  2. Step 2: Convert to fraction form
    165,606.40/248,409.60 = 40,947.40/x
  3. Step 3: Cross multiply
    165,606.40x = 248,409.60 × 40,947.40
  4. Step 4: Simplify right side
    165,606.40x = 10,171,727,255.04
  5. Step 5: Solve for x
    x = 10,171,727,255.04/165,606.40
  6. Step 6: Final answer
    x = 61,421.10

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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.