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Finding the Fourth Proportional to 354,988.39, 532,676.33 and 205,520.61

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Solution

The fourth proportional to 354,988.39, 532,676.33 and 205,520.61 is: 308,393.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,988.39 : 532,676.33 = 205,520.61 : x
  2. Step 2: Convert to fraction form
    354,988.39/532,676.33 = 205,520.61/x
  3. Step 3: Cross multiply
    354,988.39x = 532,676.33 × 205,520.61
  4. Step 4: Simplify right side
    354,988.39x = 109,475,964,864.64
  5. Step 5: Solve for x
    x = 109,475,964,864.64/354,988.39
  6. Step 6: Final answer
    x = 308,393.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.