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Finding the Fourth Proportional to 319,680.75, 479,529.77 and 98,064.75

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Solution

The fourth proportional to 319,680.75, 479,529.77 and 98,064.75 is: 147,099.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,680.75 : 479,529.77 = 98,064.75 : x
  2. Step 2: Convert to fraction form
    319,680.75/479,529.77 = 98,064.75/x
  3. Step 3: Cross multiply
    319,680.75x = 479,529.77 × 98,064.75
  4. Step 4: Simplify right side
    319,680.75x = 47,024,966,522.28
  5. Step 5: Solve for x
    x = 47,024,966,522.28/319,680.75
  6. Step 6: Final answer
    x = 147,099.78

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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.