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Finding the Fourth Proportional to 311,758.45, 430,226.47 and 168,518.49

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Solution

The fourth proportional to 311,758.45, 430,226.47 and 168,518.49 is: 232,555.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,758.45 : 430,226.47 = 168,518.49 : x
  2. Step 2: Convert to fraction form
    311,758.45/430,226.47 = 168,518.49/x
  3. Step 3: Cross multiply
    311,758.45x = 430,226.47 × 168,518.49
  4. Step 4: Simplify right side
    311,758.45x = 72,501,115,293.08
  5. Step 5: Solve for x
    x = 72,501,115,293.08/311,758.45
  6. Step 6: Final answer
    x = 232,555.42

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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.