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Finding the Fourth Proportional to 231,011.80, 346,517.70 and 213,731.80

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Solution

The fourth proportional to 231,011.80, 346,517.70 and 213,731.80 is: 320,597.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,011.80 : 346,517.70 = 213,731.80 : x
  2. Step 2: Convert to fraction form
    231,011.80/346,517.70 = 213,731.80/x
  3. Step 3: Cross multiply
    231,011.80x = 346,517.70 × 213,731.80
  4. Step 4: Simplify right side
    231,011.80x = 74,061,851,752.86
  5. Step 5: Solve for x
    x = 74,061,851,752.86/231,011.80
  6. Step 6: Final answer
    x = 320,597.70

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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.