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Finding the Fourth Proportional to 548,711.88, 757,251.77 and 306,979.94

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Solution

The fourth proportional to 548,711.88, 757,251.77 and 306,979.94 is: 423,648.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,711.88 : 757,251.77 = 306,979.94 : x
  2. Step 2: Convert to fraction form
    548,711.88/757,251.77 = 306,979.94/x
  3. Step 3: Cross multiply
    548,711.88x = 757,251.77 × 306,979.94
  4. Step 4: Simplify right side
    548,711.88x = 232,461,097,598.34
  5. Step 5: Solve for x
    x = 232,461,097,598.34/548,711.88
  6. Step 6: Final answer
    x = 423,648.74

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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.