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Finding the Fourth Proportional to 303,646.81, 455,107.87 and 141,322.43

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Solution

The fourth proportional to 303,646.81, 455,107.87 and 141,322.43 is: 211,815.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,646.81 : 455,107.87 = 141,322.43 : x
  2. Step 2: Convert to fraction form
    303,646.81/455,107.87 = 141,322.43/x
  3. Step 3: Cross multiply
    303,646.81x = 455,107.87 × 141,322.43
  4. Step 4: Simplify right side
    303,646.81x = 64,316,950,100.52
  5. Step 5: Solve for x
    x = 64,316,950,100.52/303,646.81
  6. Step 6: Final answer
    x = 211,815.00

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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.