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Finding the Fourth Proportional to 321,130.93, 443,187.68 and 177,904.30

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Solution

The fourth proportional to 321,130.93, 443,187.68 and 177,904.30 is: 245,522.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,130.93 : 443,187.68 = 177,904.30 : x
  2. Step 2: Convert to fraction form
    321,130.93/443,187.68 = 177,904.30/x
  3. Step 3: Cross multiply
    321,130.93x = 443,187.68 × 177,904.30
  4. Step 4: Simplify right side
    321,130.93x = 78,844,993,979.02
  5. Step 5: Solve for x
    x = 78,844,993,979.02/321,130.93
  6. Step 6: Final answer
    x = 245,522.89

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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.