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Finding the Fourth Proportional to 311,758.71, 430,226.83 and 168,518.76

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Solution

The fourth proportional to 311,758.71, 430,226.83 and 168,518.76 is: 232,555.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,758.71 : 430,226.83 = 168,518.76 : x
  2. Step 2: Convert to fraction form
    311,758.71/430,226.83 = 168,518.76/x
  3. Step 3: Cross multiply
    311,758.71x = 430,226.83 × 168,518.76
  4. Step 4: Simplify right side
    311,758.71x = 72,501,290,823.60
  5. Step 5: Solve for x
    x = 72,501,290,823.60/311,758.71
  6. Step 6: Final answer
    x = 232,555.78

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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.