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Finding the Fourth Proportional to 319,372.12, 478,976.44 and 94,680.01

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Solution

The fourth proportional to 319,372.12, 478,976.44 and 94,680.01 is: 141,995.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,372.12 : 478,976.44 = 94,680.01 : x
  2. Step 2: Convert to fraction form
    319,372.12/478,976.44 = 94,680.01/x
  3. Step 3: Cross multiply
    319,372.12x = 478,976.44 × 94,680.01
  4. Step 4: Simplify right side
    319,372.12x = 45,349,494,128.96
  5. Step 5: Solve for x
    x = 45,349,494,128.96/319,372.12
  6. Step 6: Final answer
    x = 141,995.78

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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.