Home / 385,392.42-531,842.58-213,322.23

Finding the Fourth Proportional to 385,392.42, 531,842.58 and 213,322.23

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Solution

The fourth proportional to 385,392.42, 531,842.58 and 213,322.23 is: 294,385.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,392.42 : 531,842.58 = 213,322.23 : x
  2. Step 2: Convert to fraction form
    385,392.42/531,842.58 = 213,322.23/x
  3. Step 3: Cross multiply
    385,392.42x = 531,842.58 × 213,322.23
  4. Step 4: Simplify right side
    385,392.42x = 113,453,845,174.55
  5. Step 5: Solve for x
    x = 113,453,845,174.55/385,392.42
  6. Step 6: Final answer
    x = 294,385.25

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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.