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Finding the Fourth Proportional to 322,681.68, 484,087.86 and 135,693

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Solution

The fourth proportional to 322,681.68, 484,087.86 and 135,693 is: 203,566.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,681.68 : 484,087.86 = 135,693 : x
  2. Step 2: Convert to fraction form
    322,681.68/484,087.86 = 135,693/x
  3. Step 3: Cross multiply
    322,681.68x = 484,087.86 × 135,693
  4. Step 4: Simplify right side
    322,681.68x = 65,687,333,986.98
  5. Step 5: Solve for x
    x = 65,687,333,986.98/322,681.68
  6. Step 6: Final answer
    x = 203,566.98

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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.