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Finding the Fourth Proportional to 254,697.84, 351,489.76 and 139,979.77

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Solution

The fourth proportional to 254,697.84, 351,489.76 and 139,979.77 is: 193,175.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,697.84 : 351,489.76 = 139,979.77 : x
  2. Step 2: Convert to fraction form
    254,697.84/351,489.76 = 139,979.77/x
  3. Step 3: Cross multiply
    254,697.84x = 351,489.76 × 139,979.77
  4. Step 4: Simplify right side
    254,697.84x = 49,201,454,533.48
  5. Step 5: Solve for x
    x = 49,201,454,533.48/254,697.84
  6. Step 6: Final answer
    x = 193,175.78

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1.5x scale

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.