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Finding the Fourth Proportional to 549,315, 757,990.89 and 319,922.46

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Solution

The fourth proportional to 549,315, 757,990.89 and 319,922.46 is: 441,455.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,315 : 757,990.89 = 319,922.46 : x
  2. Step 2: Convert to fraction form
    549,315/757,990.89 = 319,922.46/x
  3. Step 3: Cross multiply
    549,315x = 757,990.89 × 319,922.46
  4. Step 4: Simplify right side
    549,315x = 242,498,310,186.39
  5. Step 5: Solve for x
    x = 242,498,310,186.39/549,315
  6. Step 6: Final answer
    x = 441,455.83

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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.