Home / 385,100.49-531,397.79-212,991.11

Finding the Fourth Proportional to 385,100.49, 531,397.79 and 212,991.11

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Solution

The fourth proportional to 385,100.49, 531,397.79 and 212,991.11 is: 293,905.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,100.49 : 531,397.79 = 212,991.11 : x
  2. Step 2: Convert to fraction form
    385,100.49/531,397.79 = 212,991.11/x
  3. Step 3: Cross multiply
    385,100.49x = 531,397.79 × 212,991.11
  4. Step 4: Simplify right side
    385,100.49x = 113,183,001,421.70
  5. Step 5: Solve for x
    x = 113,183,001,421.70/385,100.49
  6. Step 6: Final answer
    x = 293,905.11

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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.