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Finding the Fourth Proportional to 303,800.10, 455,335.65 and 126,215.70

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Solution

The fourth proportional to 303,800.10, 455,335.65 and 126,215.70 is: 189,172.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,800.10 : 455,335.65 = 126,215.70 : x
  2. Step 2: Convert to fraction form
    303,800.10/455,335.65 = 126,215.70/x
  3. Step 3: Cross multiply
    303,800.10x = 455,335.65 × 126,215.70
  4. Step 4: Simplify right side
    303,800.10x = 57,470,507,799.71
  5. Step 5: Solve for x
    x = 57,470,507,799.71/303,800.10
  6. Step 6: Final answer
    x = 189,172.12

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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.