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Finding the Fourth Proportional to 245,708.40, 368,512.20 and 68,170.80

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Solution

The fourth proportional to 245,708.40, 368,512.20 and 68,170.80 is: 102,242.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,708.40 : 368,512.20 = 68,170.80 : x
  2. Step 2: Convert to fraction form
    245,708.40/368,512.20 = 68,170.80/x
  3. Step 3: Cross multiply
    245,708.40x = 368,512.20 × 68,170.80
  4. Step 4: Simplify right side
    245,708.40x = 25,121,771,483.76
  5. Step 5: Solve for x
    x = 25,121,771,483.76/245,708.40
  6. Step 6: Final answer
    x = 102,242.22

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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.