Home / 385,433.18-531,884.43-213,358.65

Finding the Fourth Proportional to 385,433.18, 531,884.43 and 213,358.65

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Solution

The fourth proportional to 385,433.18, 531,884.43 and 213,358.65 is: 294,427.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,433.18 : 531,884.43 = 213,358.65 : x
  2. Step 2: Convert to fraction form
    385,433.18/531,884.43 = 213,358.65/x
  3. Step 3: Cross multiply
    385,433.18x = 531,884.43 × 213,358.65
  4. Step 4: Simplify right side
    385,433.18x = 113,482,143,940.82
  5. Step 5: Solve for x
    x = 113,482,143,940.82/385,433.18
  6. Step 6: Final answer
    x = 294,427.54

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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.