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Finding the Fourth Proportional to 281,338.73, 422,008.79 and 70,976.67

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Solution

The fourth proportional to 281,338.73, 422,008.79 and 70,976.67 is: 106,465.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,338.73 : 422,008.79 = 70,976.67 : x
  2. Step 2: Convert to fraction form
    281,338.73/422,008.79 = 70,976.67/x
  3. Step 3: Cross multiply
    281,338.73x = 422,008.79 × 70,976.67
  4. Step 4: Simplify right side
    281,338.73x = 29,952,779,061.31
  5. Step 5: Solve for x
    x = 29,952,779,061.31/281,338.73
  6. Step 6: Final answer
    x = 106,465.18

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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.