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Finding the Fourth Proportional to 287,998.72, 432,190.94 and 119,519.20

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Solution

The fourth proportional to 287,998.72, 432,190.94 and 119,519.20 is: 179,358.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,998.72 : 432,190.94 = 119,519.20 : x
  2. Step 2: Convert to fraction form
    287,998.72/432,190.94 = 119,519.20/x
  3. Step 3: Cross multiply
    287,998.72x = 432,190.94 × 119,519.20
  4. Step 4: Simplify right side
    287,998.72x = 51,655,115,396.05
  5. Step 5: Solve for x
    x = 51,655,115,396.05/287,998.72
  6. Step 6: Final answer
    x = 179,358.84

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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.