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Finding the Fourth Proportional to 281,423.58, 422,178.57 and 112,943.58

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Solution

The fourth proportional to 281,423.58, 422,178.57 and 112,943.58 is: 169,432.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,423.58 : 422,178.57 = 112,943.58 : x
  2. Step 2: Convert to fraction form
    281,423.58/422,178.57 = 112,943.58/x
  3. Step 3: Cross multiply
    281,423.58x = 422,178.57 × 112,943.58
  4. Step 4: Simplify right side
    281,423.58x = 47,682,359,095.08
  5. Step 5: Solve for x
    x = 47,682,359,095.08/281,423.58
  6. Step 6: Final answer
    x = 169,432.71

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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.