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Finding the Fourth Proportional to 643,147.92, 964,730.04 and 243,681.39

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Solution

The fourth proportional to 643,147.92, 964,730.04 and 243,681.39 is: 365,525.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,147.92 : 964,730.04 = 243,681.39 : x
  2. Step 2: Convert to fraction form
    643,147.92/964,730.04 = 243,681.39/x
  3. Step 3: Cross multiply
    643,147.92x = 964,730.04 × 243,681.39
  4. Step 4: Simplify right side
    643,147.92x = 235,086,757,121.96
  5. Step 5: Solve for x
    x = 235,086,757,121.96/643,147.92
  6. Step 6: Final answer
    x = 365,525.18

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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.