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Finding the Fourth Proportional to 320,389.45, 480,657.17 and 170,550.79

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Solution

The fourth proportional to 320,389.45, 480,657.17 and 170,550.79 is: 255,865.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,389.45 : 480,657.17 = 170,550.79 : x
  2. Step 2: Convert to fraction form
    320,389.45/480,657.17 = 170,550.79/x
  3. Step 3: Cross multiply
    320,389.45x = 480,657.17 × 170,550.79
  4. Step 4: Simplify right side
    320,389.45x = 81,976,459,287.40
  5. Step 5: Solve for x
    x = 81,976,459,287.40/320,389.45
  6. Step 6: Final answer
    x = 255,865.04

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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.