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Finding the Fourth Proportional to 385,481.01, 531,955.51 and 213,389.02

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Solution

The fourth proportional to 385,481.01, 531,955.51 and 213,389.02 is: 294,472.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,481.01 : 531,955.51 = 213,389.02 : x
  2. Step 2: Convert to fraction form
    385,481.01/531,955.51 = 213,389.02/x
  3. Step 3: Cross multiply
    385,481.01x = 531,955.51 × 213,389.02
  4. Step 4: Simplify right side
    385,481.01x = 113,513,464,962.50
  5. Step 5: Solve for x
    x = 113,513,464,962.50/385,481.01
  6. Step 6: Final answer
    x = 294,472.26

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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.