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Finding the Fourth Proportional to 288,790.30, 432,893.85 and 131,131.90

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Solution

The fourth proportional to 288,790.30, 432,893.85 and 131,131.90 is: 196,565.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,790.30 : 432,893.85 = 131,131.90 : x
  2. Step 2: Convert to fraction form
    288,790.30/432,893.85 = 131,131.90/x
  3. Step 3: Cross multiply
    288,790.30x = 432,893.85 × 131,131.90
  4. Step 4: Simplify right side
    288,790.30x = 56,766,193,048.82
  5. Step 5: Solve for x
    x = 56,766,193,048.82/288,790.30
  6. Step 6: Final answer
    x = 196,565.44

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1.5x scale

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.