Home / 385,223.45-531,624.06-213,138.64

Finding the Fourth Proportional to 385,223.45, 531,624.06 and 213,138.64

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Solution

The fourth proportional to 385,223.45, 531,624.06 and 213,138.64 is: 294,140.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,223.45 : 531,624.06 = 213,138.64 : x
  2. Step 2: Convert to fraction form
    385,223.45/531,624.06 = 213,138.64/x
  3. Step 3: Cross multiply
    385,223.45x = 531,624.06 × 213,138.64
  4. Step 4: Simplify right side
    385,223.45x = 113,309,629,804.21
  5. Step 5: Solve for x
    x = 113,309,629,804.21/385,223.45
  6. Step 6: Final answer
    x = 294,140.01

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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.