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Finding the Fourth Proportional to 385,035.76, 531,136.08 and 223,873

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Solution

The fourth proportional to 385,035.76, 531,136.08 and 223,873 is: 308,820.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,035.76 : 531,136.08 = 223,873 : x
  2. Step 2: Convert to fraction form
    385,035.76/531,136.08 = 223,873/x
  3. Step 3: Cross multiply
    385,035.76x = 531,136.08 × 223,873
  4. Step 4: Simplify right side
    385,035.76x = 118,907,027,637.84
  5. Step 5: Solve for x
    x = 118,907,027,637.84/385,035.76
  6. Step 6: Final answer
    x = 308,820.74

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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.