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Finding the Fourth Proportional to 547,425.36, 755,418.12 and 308,946

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Solution

The fourth proportional to 547,425.36, 755,418.12 and 308,946 is: 426,329.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,425.36 : 755,418.12 = 308,946 : x
  2. Step 2: Convert to fraction form
    547,425.36/755,418.12 = 308,946/x
  3. Step 3: Cross multiply
    547,425.36x = 755,418.12 × 308,946
  4. Step 4: Simplify right side
    547,425.36x = 233,383,406,501.52
  5. Step 5: Solve for x
    x = 233,383,406,501.52/547,425.36
  6. Step 6: Final answer
    x = 426,329.18

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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.