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Finding the Fourth Proportional to 303,786.61, 455,674.23 and 90,699.19

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Solution

The fourth proportional to 303,786.61, 455,674.23 and 90,699.19 is: 136,047.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,786.61 : 455,674.23 = 90,699.19 : x
  2. Step 2: Convert to fraction form
    303,786.61/455,674.23 = 90,699.19/x
  3. Step 3: Cross multiply
    303,786.61x = 455,674.23 × 90,699.19
  4. Step 4: Simplify right side
    303,786.61x = 41,329,283,564.87
  5. Step 5: Solve for x
    x = 41,329,283,564.87/303,786.61
  6. Step 6: Final answer
    x = 136,047.09

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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.