Home / 385,103.21-531,401.52-212,993.84

Finding the Fourth Proportional to 385,103.21, 531,401.52 and 212,993.84

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Solution

The fourth proportional to 385,103.21, 531,401.52 and 212,993.84 is: 293,908.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,103.21 : 531,401.52 = 212,993.84 : x
  2. Step 2: Convert to fraction form
    385,103.21/531,401.52 = 212,993.84/x
  3. Step 3: Cross multiply
    385,103.21x = 531,401.52 × 212,993.84
  4. Step 4: Simplify right side
    385,103.21x = 113,185,247,669.63
  5. Step 5: Solve for x
    x = 113,185,247,669.63/385,103.21
  6. Step 6: Final answer
    x = 293,908.87

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1.5x scale

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.