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Finding the Fourth Proportional to 311,519.76, 429,897.66 and 168,279.82

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Solution

The fourth proportional to 311,519.76, 429,897.66 and 168,279.82 is: 232,226.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,519.76 : 429,897.66 = 168,279.82 : x
  2. Step 2: Convert to fraction form
    311,519.76/429,897.66 = 168,279.82/x
  3. Step 3: Cross multiply
    311,519.76x = 429,897.66 × 168,279.82
  4. Step 4: Simplify right side
    311,519.76x = 72,343,100,843.22
  5. Step 5: Solve for x
    x = 72,343,100,843.22/311,519.76
  6. Step 6: Final answer
    x = 232,226.36

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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.