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Finding the Fourth Proportional to 547,849.39, 756,017.65 and 306,133.95

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Solution

The fourth proportional to 547,849.39, 756,017.65 and 306,133.95 is: 422,456.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,849.39 : 756,017.65 = 306,133.95 : x
  2. Step 2: Convert to fraction form
    547,849.39/756,017.65 = 306,133.95/x
  3. Step 3: Cross multiply
    547,849.39x = 756,017.65 × 306,133.95
  4. Step 4: Simplify right side
    547,849.39x = 231,442,669,464.22
  5. Step 5: Solve for x
    x = 231,442,669,464.22/547,849.39
  6. Step 6: Final answer
    x = 422,456.74

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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.