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Finding the Fourth Proportional to 320,162.80, 479,612.40 and 162,504.40

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Solution

The fourth proportional to 320,162.80, 479,612.40 and 162,504.40 is: 243,435.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,162.80 : 479,612.40 = 162,504.40 : x
  2. Step 2: Convert to fraction form
    320,162.80/479,612.40 = 162,504.40/x
  3. Step 3: Cross multiply
    320,162.80x = 479,612.40 × 162,504.40
  4. Step 4: Simplify right side
    320,162.80x = 77,939,125,294.56
  5. Step 5: Solve for x
    x = 77,939,125,294.56/320,162.80
  6. Step 6: Final answer
    x = 243,435.92

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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.