Home / 385,092.08-531,445.72-213,009.30

Finding the Fourth Proportional to 385,092.08, 531,445.72 and 213,009.30

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Solution

The fourth proportional to 385,092.08, 531,445.72 and 213,009.30 is: 293,963.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,092.08 : 531,445.72 = 213,009.30 : x
  2. Step 2: Convert to fraction form
    385,092.08/531,445.72 = 213,009.30/x
  3. Step 3: Cross multiply
    385,092.08x = 531,445.72 × 213,009.30
  4. Step 4: Simplify right side
    385,092.08x = 113,202,880,805.20
  5. Step 5: Solve for x
    x = 113,202,880,805.20/385,092.08
  6. Step 6: Final answer
    x = 293,963.15

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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.