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Finding the Fourth Proportional to 422,554.22, 634,080.42 and 156,501.55

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Solution

The fourth proportional to 422,554.22, 634,080.42 and 156,501.55 is: 234,844.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,554.22 : 634,080.42 = 156,501.55 : x
  2. Step 2: Convert to fraction form
    422,554.22/634,080.42 = 156,501.55/x
  3. Step 3: Cross multiply
    422,554.22x = 634,080.42 × 156,501.55
  4. Step 4: Simplify right side
    422,554.22x = 99,234,569,347.25
  5. Step 5: Solve for x
    x = 99,234,569,347.25/422,554.22
  6. Step 6: Final answer
    x = 234,844.58

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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.