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Finding the Fourth Proportional to 355,425.61, 490,487.30 and 194,281.30

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Solution

The fourth proportional to 355,425.61, 490,487.30 and 194,281.30 is: 268,108.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,425.61 : 490,487.30 = 194,281.30 : x
  2. Step 2: Convert to fraction form
    355,425.61/490,487.30 = 194,281.30/x
  3. Step 3: Cross multiply
    355,425.61x = 490,487.30 × 194,281.30
  4. Step 4: Simplify right side
    355,425.61x = 95,292,507,825.05
  5. Step 5: Solve for x
    x = 95,292,507,825.05/355,425.61
  6. Step 6: Final answer
    x = 268,108.17

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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.