Home / 385,243.47-531,651.60-213,158.43

Finding the Fourth Proportional to 385,243.47, 531,651.60 and 213,158.43

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Solution

The fourth proportional to 385,243.47, 531,651.60 and 213,158.43 is: 294,167.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,243.47 : 531,651.60 = 213,158.43 : x
  2. Step 2: Convert to fraction form
    385,243.47/531,651.60 = 213,158.43/x
  3. Step 3: Cross multiply
    385,243.47x = 531,651.60 × 213,158.43
  4. Step 4: Simplify right side
    385,243.47x = 113,326,020,362.99
  5. Step 5: Solve for x
    x = 113,326,020,362.99/385,243.47
  6. Step 6: Final answer
    x = 294,167.27

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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.