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Finding the Fourth Proportional to 548,589.64, 757,205.87 and 319,191.23

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Solution

The fourth proportional to 548,589.64, 757,205.87 and 319,191.23 is: 440,572.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,589.64 : 757,205.87 = 319,191.23 : x
  2. Step 2: Convert to fraction form
    548,589.64/757,205.87 = 319,191.23/x
  3. Step 3: Cross multiply
    548,589.64x = 757,205.87 × 319,191.23
  4. Step 4: Simplify right side
    548,589.64x = 241,693,473,008.52
  5. Step 5: Solve for x
    x = 241,693,473,008.52/548,589.64
  6. Step 6: Final answer
    x = 440,572.43

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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.