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Finding the Fourth Proportional to 288,160.80, 431,690.40 and 154,996.80

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Solution

The fourth proportional to 288,160.80, 431,690.40 and 154,996.80 is: 232,198.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,160.80 : 431,690.40 = 154,996.80 : x
  2. Step 2: Convert to fraction form
    288,160.80/431,690.40 = 154,996.80/x
  3. Step 3: Cross multiply
    288,160.80x = 431,690.40 × 154,996.80
  4. Step 4: Simplify right side
    288,160.80x = 66,910,630,590.72
  5. Step 5: Solve for x
    x = 66,910,630,590.72/288,160.80
  6. Step 6: Final answer
    x = 232,198.93

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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.