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Finding the Fourth Proportional to 288,937.80, 433,115.10 and 131,279.40

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Solution

The fourth proportional to 288,937.80, 433,115.10 and 131,279.40 is: 196,786.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,937.80 : 433,115.10 = 131,279.40 : x
  2. Step 2: Convert to fraction form
    288,937.80/433,115.10 = 131,279.40/x
  3. Step 3: Cross multiply
    288,937.80x = 433,115.10 × 131,279.40
  4. Step 4: Simplify right side
    288,937.80x = 56,859,090,458.94
  5. Step 5: Solve for x
    x = 56,859,090,458.94/288,937.80
  6. Step 6: Final answer
    x = 196,786.61

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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.