Home / 385,125.22-531,432.09-213,015.82

Finding the Fourth Proportional to 385,125.22, 531,432.09 and 213,015.82

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Solution

The fourth proportional to 385,125.22, 531,432.09 and 213,015.82 is: 293,939.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,125.22 : 531,432.09 = 213,015.82 : x
  2. Step 2: Convert to fraction form
    385,125.22/531,432.09 = 213,015.82/x
  3. Step 3: Cross multiply
    385,125.22x = 531,432.09 × 213,015.82
  4. Step 4: Simplify right side
    385,125.22x = 113,203,442,425.66
  5. Step 5: Solve for x
    x = 113,203,442,425.66/385,125.22
  6. Step 6: Final answer
    x = 293,939.31

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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.