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Finding the Fourth Proportional to 356,685.12, 491,795.04 and 308,199.42

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Solution

The fourth proportional to 356,685.12, 491,795.04 and 308,199.42 is: 424,943.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,685.12 : 491,795.04 = 308,199.42 : x
  2. Step 2: Convert to fraction form
    356,685.12/491,795.04 = 308,199.42/x
  3. Step 3: Cross multiply
    356,685.12x = 491,795.04 × 308,199.42
  4. Step 4: Simplify right side
    356,685.12x = 151,570,946,086.88
  5. Step 5: Solve for x
    x = 151,570,946,086.88/356,685.12
  6. Step 6: Final answer
    x = 424,943.28

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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.