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Finding the Fourth Proportional to 303,765.30, 455,101.20 and 240,998.40

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Solution

The fourth proportional to 303,765.30, 455,101.20 and 240,998.40 is: 361,063.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,765.30 : 455,101.20 = 240,998.40 : x
  2. Step 2: Convert to fraction form
    303,765.30/455,101.20 = 240,998.40/x
  3. Step 3: Cross multiply
    303,765.30x = 455,101.20 × 240,998.40
  4. Step 4: Simplify right side
    303,765.30x = 109,678,661,038.08
  5. Step 5: Solve for x
    x = 109,678,661,038.08/303,765.30
  6. Step 6: Final answer
    x = 361,063.82

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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.