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Finding the Fourth Proportional to 320,270.64, 479,706.12 and 162,227.76

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Solution

The fourth proportional to 320,270.64, 479,706.12 and 162,227.76 is: 242,987.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,270.64 : 479,706.12 = 162,227.76 : x
  2. Step 2: Convert to fraction form
    320,270.64/479,706.12 = 162,227.76/x
  3. Step 3: Cross multiply
    320,270.64x = 479,706.12 × 162,227.76
  4. Step 4: Simplify right side
    320,270.64x = 77,821,649,305.89
  5. Step 5: Solve for x
    x = 77,821,649,305.89/320,270.64
  6. Step 6: Final answer
    x = 242,987.15

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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.