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Finding the Fourth Proportional to 211,590.88, 317,387.36 and 71,350.72

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Solution

The fourth proportional to 211,590.88, 317,387.36 and 71,350.72 is: 107,026.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,590.88 : 317,387.36 = 71,350.72 : x
  2. Step 2: Convert to fraction form
    211,590.88/317,387.36 = 71,350.72/x
  3. Step 3: Cross multiply
    211,590.88x = 317,387.36 × 71,350.72
  4. Step 4: Simplify right side
    211,590.88x = 22,645,816,654.90
  5. Step 5: Solve for x
    x = 22,645,816,654.90/211,590.88
  6. Step 6: Final answer
    x = 107,026.43

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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.