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Finding the Fourth Proportional to 320,107.30, 479,529.15 and 162,448.90

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Solution

The fourth proportional to 320,107.30, 479,529.15 and 162,448.90 is: 243,352.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,107.30 : 479,529.15 = 162,448.90 : x
  2. Step 2: Convert to fraction form
    320,107.30/479,529.15 = 162,448.90/x
  3. Step 3: Cross multiply
    320,107.30x = 479,529.15 × 162,448.90
  4. Step 4: Simplify right side
    320,107.30x = 77,898,982,935.44
  5. Step 5: Solve for x
    x = 77,898,982,935.44/320,107.30
  6. Step 6: Final answer
    x = 243,352.72

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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.