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Finding the Fourth Proportional to 196,865.60, 295,298.40 and 72,190.40

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Solution

The fourth proportional to 196,865.60, 295,298.40 and 72,190.40 is: 108,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,865.60 : 295,298.40 = 72,190.40 : x
  2. Step 2: Convert to fraction form
    196,865.60/295,298.40 = 72,190.40/x
  3. Step 3: Cross multiply
    196,865.60x = 295,298.40 × 72,190.40
  4. Step 4: Simplify right side
    196,865.60x = 21,317,709,615.36
  5. Step 5: Solve for x
    x = 21,317,709,615.36/196,865.60
  6. Step 6: Final answer
    x = 108,285.60

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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.