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Finding the Fourth Proportional to 304,017.78, 455,780.70 and 126,658.02

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Solution

The fourth proportional to 304,017.78, 455,780.70 and 126,658.02 is: 189,884.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,017.78 : 455,780.70 = 126,658.02 : x
  2. Step 2: Convert to fraction form
    304,017.78/455,780.70 = 126,658.02/x
  3. Step 3: Cross multiply
    304,017.78x = 455,780.70 × 126,658.02
  4. Step 4: Simplify right side
    304,017.78x = 57,728,281,016.21
  5. Step 5: Solve for x
    x = 57,728,281,016.21/304,017.78
  6. Step 6: Final answer
    x = 189,884.56

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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.