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Finding the Fourth Proportional to 547,806.85, 755,971.84 and 306,089.58

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Solution

The fourth proportional to 547,806.85, 755,971.84 and 306,089.58 is: 422,402.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,806.85 : 755,971.84 = 306,089.58 : x
  2. Step 2: Convert to fraction form
    547,806.85/755,971.84 = 306,089.58/x
  3. Step 3: Cross multiply
    547,806.85x = 755,971.84 × 306,089.58
  4. Step 4: Simplify right side
    547,806.85x = 231,395,104,493.18
  5. Step 5: Solve for x
    x = 231,395,104,493.18/547,806.85
  6. Step 6: Final answer
    x = 422,402.72

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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.