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Finding the Fourth Proportional to 445,492.88, 668,299.84 and 129,947.12

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Solution

The fourth proportional to 445,492.88, 668,299.84 and 129,947.12 is: 194,938.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,492.88 : 668,299.84 = 129,947.12 : x
  2. Step 2: Convert to fraction form
    445,492.88/668,299.84 = 129,947.12/x
  3. Step 3: Cross multiply
    445,492.88x = 668,299.84 × 129,947.12
  4. Step 4: Simplify right side
    445,492.88x = 86,843,639,504.46
  5. Step 5: Solve for x
    x = 86,843,639,504.46/445,492.88
  6. Step 6: Final answer
    x = 194,938.33

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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.