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Finding the Fourth Proportional to 321,903.80, 482,663.70 and 197,334.20

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Solution

The fourth proportional to 321,903.80, 482,663.70 and 197,334.20 is: 295,883.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,903.80 : 482,663.70 = 197,334.20 : x
  2. Step 2: Convert to fraction form
    321,903.80/482,663.70 = 197,334.20/x
  3. Step 3: Cross multiply
    321,903.80x = 482,663.70 × 197,334.20
  4. Step 4: Simplify right side
    321,903.80x = 95,246,055,108.54
  5. Step 5: Solve for x
    x = 95,246,055,108.54/321,903.80
  6. Step 6: Final answer
    x = 295,883.60

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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.