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Finding the Fourth Proportional to 547,854.59, 756,035.64 and 306,137.76

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Solution

The fourth proportional to 547,854.59, 756,035.64 and 306,137.76 is: 422,468.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,854.59 : 756,035.64 = 306,137.76 : x
  2. Step 2: Convert to fraction form
    547,854.59/756,035.64 = 306,137.76/x
  3. Step 3: Cross multiply
    547,854.59x = 756,035.64 × 306,137.76
  4. Step 4: Simplify right side
    547,854.59x = 231,451,057,309.77
  5. Step 5: Solve for x
    x = 231,451,057,309.77/547,854.59
  6. Step 6: Final answer
    x = 422,468.05

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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.