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Finding the Fourth Proportional to 548,013.68, 756,264.12 and 321,662.96

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Solution

The fourth proportional to 548,013.68, 756,264.12 and 321,662.96 is: 443,897.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,013.68 : 756,264.12 = 321,662.96 : x
  2. Step 2: Convert to fraction form
    548,013.68/756,264.12 = 321,662.96/x
  3. Step 3: Cross multiply
    548,013.68x = 756,264.12 × 321,662.96
  4. Step 4: Simplify right side
    548,013.68x = 243,262,155,381.00
  5. Step 5: Solve for x
    x = 243,262,155,381.00/548,013.68
  6. Step 6: Final answer
    x = 443,897.96

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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.