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Finding the Fourth Proportional to 615,858.80, 923,687.55 and 216,406.08

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Solution

The fourth proportional to 615,858.80, 923,687.55 and 216,406.08 is: 324,573.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,858.80 : 923,687.55 = 216,406.08 : x
  2. Step 2: Convert to fraction form
    615,858.80/923,687.55 = 216,406.08/x
  3. Step 3: Cross multiply
    615,858.80x = 923,687.55 × 216,406.08
  4. Step 4: Simplify right side
    615,858.80x = 199,891,601,840.30
  5. Step 5: Solve for x
    x = 199,891,601,840.30/615,858.80
  6. Step 6: Final answer
    x = 324,573.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.