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Finding the Fourth Proportional to 355,557.02, 490,669.13 and 194,412.79

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Solution

The fourth proportional to 355,557.02, 490,669.13 and 194,412.79 is: 268,289.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,557.02 : 490,669.13 = 194,412.79 : x
  2. Step 2: Convert to fraction form
    355,557.02/490,669.13 = 194,412.79/x
  3. Step 3: Cross multiply
    355,557.02x = 490,669.13 × 194,412.79
  4. Step 4: Simplify right side
    355,557.02x = 95,392,351,104.76
  5. Step 5: Solve for x
    x = 95,392,351,104.76/355,557.02
  6. Step 6: Final answer
    x = 268,289.88

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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.