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Finding the Fourth Proportional to 254,678.70, 351,462.90 and 139,956.48

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Solution

The fourth proportional to 254,678.70, 351,462.90 and 139,956.48 is: 193,143.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,678.70 : 351,462.90 = 139,956.48 : x
  2. Step 2: Convert to fraction form
    254,678.70/351,462.90 = 139,956.48/x
  3. Step 3: Cross multiply
    254,678.70x = 351,462.90 × 139,956.48
  4. Step 4: Simplify right side
    254,678.70x = 49,189,510,334.59
  5. Step 5: Solve for x
    x = 49,189,510,334.59/254,678.70
  6. Step 6: Final answer
    x = 193,143.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.