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Finding the Fourth Proportional to 245,622.30, 368,433.45 and 87,855.90

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Solution

The fourth proportional to 245,622.30, 368,433.45 and 87,855.90 is: 131,783.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,622.30 : 368,433.45 = 87,855.90 : x
  2. Step 2: Convert to fraction form
    245,622.30/368,433.45 = 87,855.90/x
  3. Step 3: Cross multiply
    245,622.30x = 368,433.45 × 87,855.90
  4. Step 4: Simplify right side
    245,622.30x = 32,369,052,339.86
  5. Step 5: Solve for x
    x = 32,369,052,339.86/245,622.30
  6. Step 6: Final answer
    x = 131,783.85

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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.