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Finding the Fourth Proportional to 341,629.60, 512,012.40 and 130,986.40

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Solution

The fourth proportional to 341,629.60, 512,012.40 and 130,986.40 is: 196,313.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,629.60 : 512,012.40 = 130,986.40 : x
  2. Step 2: Convert to fraction form
    341,629.60/512,012.40 = 130,986.40/x
  3. Step 3: Cross multiply
    341,629.60x = 512,012.40 × 130,986.40
  4. Step 4: Simplify right side
    341,629.60x = 67,066,661,031.36
  5. Step 5: Solve for x
    x = 67,066,661,031.36/341,629.60
  6. Step 6: Final answer
    x = 196,313.96

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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.