Home / 389,916.60-584,583.30-212,623.80

Finding the Fourth Proportional to 389,916.60, 584,583.30 and 212,623.80

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Solution

The fourth proportional to 389,916.60, 584,583.30 and 212,623.80 is: 318,776.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,916.60 : 584,583.30 = 212,623.80 : x
  2. Step 2: Convert to fraction form
    389,916.60/584,583.30 = 212,623.80/x
  3. Step 3: Cross multiply
    389,916.60x = 584,583.30 × 212,623.80
  4. Step 4: Simplify right side
    389,916.60x = 124,296,322,662.54
  5. Step 5: Solve for x
    x = 124,296,322,662.54/389,916.60
  6. Step 6: Final answer
    x = 318,776.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.