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Finding the Fourth Proportional to 320,396.48, 480,667.62 and 170,557.82

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Solution

The fourth proportional to 320,396.48, 480,667.62 and 170,557.82 is: 255,875.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,396.48 : 480,667.62 = 170,557.82 : x
  2. Step 2: Convert to fraction form
    320,396.48/480,667.62 = 170,557.82/x
  3. Step 3: Cross multiply
    320,396.48x = 480,667.62 × 170,557.82
  4. Step 4: Simplify right side
    320,396.48x = 81,981,620,491.16
  5. Step 5: Solve for x
    x = 81,981,620,491.16/320,396.48
  6. Step 6: Final answer
    x = 255,875.54

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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.