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Finding the Fourth Proportional to 321,031.97, 481,579.83 and 118,681.12

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Solution

The fourth proportional to 321,031.97, 481,579.83 and 118,681.12 is: 178,033.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,031.97 : 481,579.83 = 118,681.12 : x
  2. Step 2: Convert to fraction form
    321,031.97/481,579.83 = 118,681.12/x
  3. Step 3: Cross multiply
    321,031.97x = 481,579.83 × 118,681.12
  4. Step 4: Simplify right side
    321,031.97x = 57,154,431,486.90
  5. Step 5: Solve for x
    x = 57,154,431,486.90/321,031.97
  6. Step 6: Final answer
    x = 178,033.45

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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.