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Finding the Fourth Proportional to 259,590.30, 389,385.45 and 141,200.70

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Solution

The fourth proportional to 259,590.30, 389,385.45 and 141,200.70 is: 211,801.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,590.30 : 389,385.45 = 141,200.70 : x
  2. Step 2: Convert to fraction form
    259,590.30/389,385.45 = 141,200.70/x
  3. Step 3: Cross multiply
    259,590.30x = 389,385.45 × 141,200.70
  4. Step 4: Simplify right side
    259,590.30x = 54,981,498,109.82
  5. Step 5: Solve for x
    x = 54,981,498,109.82/259,590.30
  6. Step 6: Final answer
    x = 211,801.05

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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.