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Finding the Fourth Proportional to 547,607.43, 755,696.70 and 305,890.47

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Solution

The fourth proportional to 547,607.43, 755,696.70 and 305,890.47 is: 422,127.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,607.43 : 755,696.70 = 305,890.47 : x
  2. Step 2: Convert to fraction form
    547,607.43/755,696.70 = 305,890.47/x
  3. Step 3: Cross multiply
    547,607.43x = 755,696.70 × 305,890.47
  4. Step 4: Simplify right side
    547,607.43x = 231,160,418,740.45
  5. Step 5: Solve for x
    x = 231,160,418,740.45/547,607.43
  6. Step 6: Final answer
    x = 422,127.98

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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.