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Finding the Fourth Proportional to 304,872.80, 457,357.80 and 127,288.40

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Solution

The fourth proportional to 304,872.80, 457,357.80 and 127,288.40 is: 190,952.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,872.80 : 457,357.80 = 127,288.40 : x
  2. Step 2: Convert to fraction form
    304,872.80/457,357.80 = 127,288.40/x
  3. Step 3: Cross multiply
    304,872.80x = 457,357.80 × 127,288.40
  4. Step 4: Simplify right side
    304,872.80x = 58,216,342,589.52
  5. Step 5: Solve for x
    x = 58,216,342,589.52/304,872.80
  6. Step 6: Final answer
    x = 190,952.89

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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.