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Finding the Fourth Proportional to 303,718.14, 455,293.17 and 135,146.88

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Solution

The fourth proportional to 303,718.14, 455,293.17 and 135,146.88 is: 202,593.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,718.14 : 455,293.17 = 135,146.88 : x
  2. Step 2: Convert to fraction form
    303,718.14/455,293.17 = 135,146.88/x
  3. Step 3: Cross multiply
    303,718.14x = 455,293.17 × 135,146.88
  4. Step 4: Simplify right side
    303,718.14x = 61,531,451,410.81
  5. Step 5: Solve for x
    x = 61,531,451,410.81/303,718.14
  6. Step 6: Final answer
    x = 202,593.93

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1.5x scale

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.