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Finding the Fourth Proportional to 399,173.10, 550,776.64 and 229,374.42

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Solution

The fourth proportional to 399,173.10, 550,776.64 and 229,374.42 is: 316,489.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,173.10 : 550,776.64 = 229,374.42 : x
  2. Step 2: Convert to fraction form
    399,173.10/550,776.64 = 229,374.42/x
  3. Step 3: Cross multiply
    399,173.10x = 550,776.64 × 229,374.42
  4. Step 4: Simplify right side
    399,173.10x = 126,334,069,595.67
  5. Step 5: Solve for x
    x = 126,334,069,595.67/399,173.10
  6. Step 6: Final answer
    x = 316,489.44

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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.