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Finding the Fourth Proportional to 384,808.80, 576,046.80 and 290,719.20

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Solution

The fourth proportional to 384,808.80, 576,046.80 and 290,719.20 is: 435,197.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,808.80 : 576,046.80 = 290,719.20 : x
  2. Step 2: Convert to fraction form
    384,808.80/576,046.80 = 290,719.20/x
  3. Step 3: Cross multiply
    384,808.80x = 576,046.80 × 290,719.20
  4. Step 4: Simplify right side
    384,808.80x = 167,467,864,858.56
  5. Step 5: Solve for x
    x = 167,467,864,858.56/384,808.80
  6. Step 6: Final answer
    x = 435,197.60

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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.