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Finding the Fourth Proportional to 254,536.60, 381,804.90 and 129,861.40

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Solution

The fourth proportional to 254,536.60, 381,804.90 and 129,861.40 is: 194,792.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,536.60 : 381,804.90 = 129,861.40 : x
  2. Step 2: Convert to fraction form
    254,536.60/381,804.90 = 129,861.40/x
  3. Step 3: Cross multiply
    254,536.60x = 381,804.90 × 129,861.40
  4. Step 4: Simplify right side
    254,536.60x = 49,581,718,840.86
  5. Step 5: Solve for x
    x = 49,581,718,840.86/254,536.60
  6. Step 6: Final answer
    x = 194,792.10

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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.