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Finding the Fourth Proportional to 422,546.60, 633,819.90 and 173,407.40

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Solution

The fourth proportional to 422,546.60, 633,819.90 and 173,407.40 is: 260,111.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,546.60 : 633,819.90 = 173,407.40 : x
  2. Step 2: Convert to fraction form
    422,546.60/633,819.90 = 173,407.40/x
  3. Step 3: Cross multiply
    422,546.60x = 633,819.90 × 173,407.40
  4. Step 4: Simplify right side
    422,546.60x = 109,909,060,927.26
  5. Step 5: Solve for x
    x = 109,909,060,927.26/422,546.60
  6. Step 6: Final answer
    x = 260,111.10

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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.