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Finding the Fourth Proportional to 402,425.44, 603,262.90 and 135,999.64

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Solution

The fourth proportional to 402,425.44, 603,262.90 and 135,999.64 is: 203,872.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,425.44 : 603,262.90 = 135,999.64 : x
  2. Step 2: Convert to fraction form
    402,425.44/603,262.90 = 135,999.64/x
  3. Step 3: Cross multiply
    402,425.44x = 603,262.90 × 135,999.64
  4. Step 4: Simplify right side
    402,425.44x = 82,043,537,225.36
  5. Step 5: Solve for x
    x = 82,043,537,225.36/402,425.44
  6. Step 6: Final answer
    x = 203,872.64

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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.