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Finding the Fourth Proportional to 402,263.40, 603,216.90 and 135,951.60

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Solution

The fourth proportional to 402,263.40, 603,216.90 and 135,951.60 is: 203,867.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,263.40 : 603,216.90 = 135,951.60 : x
  2. Step 2: Convert to fraction form
    402,263.40/603,216.90 = 135,951.60/x
  3. Step 3: Cross multiply
    402,263.40x = 603,216.90 × 135,951.60
  4. Step 4: Simplify right side
    402,263.40x = 82,008,302,702.04
  5. Step 5: Solve for x
    x = 82,008,302,702.04/402,263.40
  6. Step 6: Final answer
    x = 203,867.17

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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.