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Finding the Fourth Proportional to 402,275.08, 603,490.38 and 136,078.84

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Solution

The fourth proportional to 402,275.08, 603,490.38 and 136,078.84 is: 204,144.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,275.08 : 603,490.38 = 136,078.84 : x
  2. Step 2: Convert to fraction form
    402,275.08/603,490.38 = 136,078.84/x
  3. Step 3: Cross multiply
    402,275.08x = 603,490.38 × 136,078.84
  4. Step 4: Simplify right side
    402,275.08x = 82,122,270,861.56
  5. Step 5: Solve for x
    x = 82,122,270,861.56/402,275.08
  6. Step 6: Final answer
    x = 204,144.56

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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.