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Finding the Fourth Proportional to 357,871.12, 493,873.20 and 196,738.48

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Solution

The fourth proportional to 357,871.12, 493,873.20 and 196,738.48 is: 271,505.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,871.12 : 493,873.20 = 196,738.48 : x
  2. Step 2: Convert to fraction form
    357,871.12/493,873.20 = 196,738.48/x
  3. Step 3: Cross multiply
    357,871.12x = 493,873.20 × 196,738.48
  4. Step 4: Simplify right side
    357,871.12x = 97,163,862,680.74
  5. Step 5: Solve for x
    x = 97,163,862,680.74/357,871.12
  6. Step 6: Final answer
    x = 271,505.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.