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Finding the Fourth Proportional to 548,356.05, 756,726.17 and 306,635.85

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Solution

The fourth proportional to 548,356.05, 756,726.17 and 306,635.85 is: 423,154.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,356.05 : 756,726.17 = 306,635.85 : x
  2. Step 2: Convert to fraction form
    548,356.05/756,726.17 = 306,635.85/x
  3. Step 3: Cross multiply
    548,356.05x = 756,726.17 × 306,635.85
  4. Step 4: Simplify right side
    548,356.05x = 232,039,370,822.02
  5. Step 5: Solve for x
    x = 232,039,370,822.02/548,356.05
  6. Step 6: Final answer
    x = 423,154.57

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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.