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Finding the Fourth Proportional to 303,451.60, 455,032 and 143,394.32

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Solution

The fourth proportional to 303,451.60, 455,032 and 143,394.32 is: 215,022.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,451.60 : 455,032 = 143,394.32 : x
  2. Step 2: Convert to fraction form
    303,451.60/455,032 = 143,394.32/x
  3. Step 3: Cross multiply
    303,451.60x = 455,032 × 143,394.32
  4. Step 4: Simplify right side
    303,451.60x = 65,249,004,218.24
  5. Step 5: Solve for x
    x = 65,249,004,218.24/303,451.60
  6. Step 6: Final answer
    x = 215,022.77

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1.5x scale

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.