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Finding the Fourth Proportional to 390,422.02, 585,745.11 and 162,673.30

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Solution

The fourth proportional to 390,422.02, 585,745.11 and 162,673.30 is: 244,056.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,422.02 : 585,745.11 = 162,673.30 : x
  2. Step 2: Convert to fraction form
    390,422.02/585,745.11 = 162,673.30/x
  3. Step 3: Cross multiply
    390,422.02x = 585,745.11 × 162,673.30
  4. Step 4: Simplify right side
    390,422.02x = 95,285,090,002.56
  5. Step 5: Solve for x
    x = 95,285,090,002.56/390,422.02
  6. Step 6: Final answer
    x = 244,056.65

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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.