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Finding the Fourth Proportional to 385,422.94, 531,532.23 and 330,958.00

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Solution

The fourth proportional to 385,422.94, 531,532.23 and 330,958.00 is: 456,420.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,422.94 : 531,532.23 = 330,958.00 : x
  2. Step 2: Convert to fraction form
    385,422.94/531,532.23 = 330,958.00/x
  3. Step 3: Cross multiply
    385,422.94x = 531,532.23 × 330,958.00
  4. Step 4: Simplify right side
    385,422.94x = 175,914,843,199.66
  5. Step 5: Solve for x
    x = 175,914,843,199.66/385,422.94
  6. Step 6: Final answer
    x = 456,420.27

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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.