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Finding the Fourth Proportional to 281,613.70, 422,542.05 and 163,386.10

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Solution

The fourth proportional to 281,613.70, 422,542.05 and 163,386.10 is: 245,149.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,613.70 : 422,542.05 = 163,386.10 : x
  2. Step 2: Convert to fraction form
    281,613.70/422,542.05 = 163,386.10/x
  3. Step 3: Cross multiply
    281,613.70x = 422,542.05 × 163,386.10
  4. Step 4: Simplify right side
    281,613.70x = 69,037,497,635.51
  5. Step 5: Solve for x
    x = 69,037,497,635.51/281,613.70
  6. Step 6: Final answer
    x = 245,149.64

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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.