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Finding the Fourth Proportional to 281,385, 422,181.18 and 148,259.88

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Solution

The fourth proportional to 281,385, 422,181.18 and 148,259.88 is: 222,444.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,385 : 422,181.18 = 148,259.88 : x
  2. Step 2: Convert to fraction form
    281,385/422,181.18 = 148,259.88/x
  3. Step 3: Cross multiply
    281,385x = 422,181.18 × 148,259.88
  4. Step 4: Simplify right side
    281,385x = 62,592,531,085.06
  5. Step 5: Solve for x
    x = 62,592,531,085.06/281,385
  6. Step 6: Final answer
    x = 222,444.45

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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.