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Finding the Fourth Proportional to 389,668.48, 537,775.68 and 325,893.76

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Solution

The fourth proportional to 389,668.48, 537,775.68 and 325,893.76 is: 449,761.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,668.48 : 537,775.68 = 325,893.76 : x
  2. Step 2: Convert to fraction form
    389,668.48/537,775.68 = 325,893.76/x
  3. Step 3: Cross multiply
    389,668.48x = 537,775.68 × 325,893.76
  4. Step 4: Simplify right side
    389,668.48x = 175,257,738,391.76
  5. Step 5: Solve for x
    x = 175,257,738,391.76/389,668.48
  6. Step 6: Final answer
    x = 449,761.14

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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.