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Finding the Fourth Proportional to 281,612.70, 422,540.55 and 163,385.10

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Solution

The fourth proportional to 281,612.70, 422,540.55 and 163,385.10 is: 245,148.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,612.70 : 422,540.55 = 163,385.10 : x
  2. Step 2: Convert to fraction form
    281,612.70/422,540.55 = 163,385.10/x
  3. Step 3: Cross multiply
    281,612.70x = 422,540.55 × 163,385.10
  4. Step 4: Simplify right side
    281,612.70x = 69,036,830,015.81
  5. Step 5: Solve for x
    x = 69,036,830,015.81/281,612.70
  6. Step 6: Final answer
    x = 245,148.14

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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.