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Finding the Fourth Proportional to 303,452.05, 455,032.56 and 143,394.76

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Solution

The fourth proportional to 303,452.05, 455,032.56 and 143,394.76 is: 215,023.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,452.05 : 455,032.56 = 143,394.76 : x
  2. Step 2: Convert to fraction form
    303,452.05/455,032.56 = 143,394.76/x
  3. Step 3: Cross multiply
    303,452.05x = 455,032.56 × 143,394.76
  4. Step 4: Simplify right side
    303,452.05x = 65,249,282,458.22
  5. Step 5: Solve for x
    x = 65,249,282,458.22/303,452.05
  6. Step 6: Final answer
    x = 215,023.37

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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.