Home / 385,297.75-531,702.93-213,215.60

Finding the Fourth Proportional to 385,297.75, 531,702.93 and 213,215.60

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Solution

The fourth proportional to 385,297.75, 531,702.93 and 213,215.60 is: 294,233.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,297.75 : 531,702.93 = 213,215.60 : x
  2. Step 2: Convert to fraction form
    385,297.75/531,702.93 = 213,215.60/x
  3. Step 3: Cross multiply
    385,297.75x = 531,702.93 × 213,215.60
  4. Step 4: Simplify right side
    385,297.75x = 113,367,359,241.71
  5. Step 5: Solve for x
    x = 113,367,359,241.71/385,297.75
  6. Step 6: Final answer
    x = 294,233.12

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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.