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Finding the Fourth Proportional to 318,658.02, 439,745.67 and 175,420.50

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Solution

The fourth proportional to 318,658.02, 439,745.67 and 175,420.50 is: 242,078.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,658.02 : 439,745.67 = 175,420.50 : x
  2. Step 2: Convert to fraction form
    318,658.02/439,745.67 = 175,420.50/x
  3. Step 3: Cross multiply
    318,658.02x = 439,745.67 × 175,420.50
  4. Step 4: Simplify right side
    318,658.02x = 77,140,405,304.24
  5. Step 5: Solve for x
    x = 77,140,405,304.24/318,658.02
  6. Step 6: Final answer
    x = 242,078.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.