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Finding the Fourth Proportional to 287,634.82, 431,358.32 and 95,457.62

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Solution

The fourth proportional to 287,634.82, 431,358.32 and 95,457.62 is: 143,155.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,634.82 : 431,358.32 = 95,457.62 : x
  2. Step 2: Convert to fraction form
    287,634.82/431,358.32 = 95,457.62/x
  3. Step 3: Cross multiply
    287,634.82x = 431,358.32 × 95,457.62
  4. Step 4: Simplify right side
    287,634.82x = 41,176,439,911.44
  5. Step 5: Solve for x
    x = 41,176,439,911.44/287,634.82
  6. Step 6: Final answer
    x = 143,155.27

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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.