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Finding the Fourth Proportional to 643,167.63, 965,329.68 and 343,904.01

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Solution

The fourth proportional to 643,167.63, 965,329.68 and 343,904.01 is: 516,165.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,167.63 : 965,329.68 = 343,904.01 : x
  2. Step 2: Convert to fraction form
    643,167.63/965,329.68 = 343,904.01/x
  3. Step 3: Cross multiply
    643,167.63x = 965,329.68 × 343,904.01
  4. Step 4: Simplify right side
    643,167.63x = 331,980,747,924.02
  5. Step 5: Solve for x
    x = 331,980,747,924.02/643,167.63
  6. Step 6: Final answer
    x = 516,165.20

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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.