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Finding the Fourth Proportional to 311,519.22, 429,896.67 and 168,279.21

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Solution

The fourth proportional to 311,519.22, 429,896.67 and 168,279.21 is: 232,225.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,519.22 : 429,896.67 = 168,279.21 : x
  2. Step 2: Convert to fraction form
    311,519.22/429,896.67 = 168,279.21/x
  3. Step 3: Cross multiply
    311,519.22x = 429,896.67 × 168,279.21
  4. Step 4: Simplify right side
    311,519.22x = 72,342,672,009.23
  5. Step 5: Solve for x
    x = 72,342,672,009.23/311,519.22
  6. Step 6: Final answer
    x = 232,225.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.