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Finding the Fourth Proportional to 553,542.56, 763,897.20 and 327,209.12

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Solution

The fourth proportional to 553,542.56, 763,897.20 and 327,209.12 is: 451,553.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,542.56 : 763,897.20 = 327,209.12 : x
  2. Step 2: Convert to fraction form
    553,542.56/763,897.20 = 327,209.12/x
  3. Step 3: Cross multiply
    553,542.56x = 763,897.20 × 327,209.12
  4. Step 4: Simplify right side
    553,542.56x = 249,954,130,582.46
  5. Step 5: Solve for x
    x = 249,954,130,582.46/553,542.56
  6. Step 6: Final answer
    x = 451,553.59

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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.