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Finding the Fourth Proportional to 303,903.90, 455,813.64 and 104,221.08

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Solution

The fourth proportional to 303,903.90, 455,813.64 and 104,221.08 is: 156,317.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,903.90 : 455,813.64 = 104,221.08 : x
  2. Step 2: Convert to fraction form
    303,903.90/455,813.64 = 104,221.08/x
  3. Step 3: Cross multiply
    303,903.90x = 455,813.64 × 104,221.08
  4. Step 4: Simplify right side
    303,903.90x = 47,505,389,839.53
  5. Step 5: Solve for x
    x = 47,505,389,839.53/303,903.90
  6. Step 6: Final answer
    x = 156,317.14

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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.