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Finding the Fourth Proportional to 304,675.60, 457,013.40 and 80,021.20

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Solution

The fourth proportional to 304,675.60, 457,013.40 and 80,021.20 is: 120,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,675.60 : 457,013.40 = 80,021.20 : x
  2. Step 2: Convert to fraction form
    304,675.60/457,013.40 = 80,021.20/x
  3. Step 3: Cross multiply
    304,675.60x = 457,013.40 × 80,021.20
  4. Step 4: Simplify right side
    304,675.60x = 36,570,760,684.08
  5. Step 5: Solve for x
    x = 36,570,760,684.08/304,675.60
  6. Step 6: Final answer
    x = 120,031.80

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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.