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Finding the Fourth Proportional to 343,991.79, 474,933.50 and 223,476.55

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Solution

The fourth proportional to 343,991.79, 474,933.50 and 223,476.55 is: 308,543.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,991.79 : 474,933.50 = 223,476.55 : x
  2. Step 2: Convert to fraction form
    343,991.79/474,933.50 = 223,476.55/x
  3. Step 3: Cross multiply
    343,991.79x = 474,933.50 × 223,476.55
  4. Step 4: Simplify right side
    343,991.79x = 106,136,500,059.43
  5. Step 5: Solve for x
    x = 106,136,500,059.43/343,991.79
  6. Step 6: Final answer
    x = 308,543.70

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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.