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Finding the Fourth Proportional to 319,478.10, 479,217.15 and 97,833.30

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Solution

The fourth proportional to 319,478.10, 479,217.15 and 97,833.30 is: 146,749.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,478.10 : 479,217.15 = 97,833.30 : x
  2. Step 2: Convert to fraction form
    319,478.10/479,217.15 = 97,833.30/x
  3. Step 3: Cross multiply
    319,478.10x = 479,217.15 × 97,833.30
  4. Step 4: Simplify right side
    319,478.10x = 46,883,395,201.10
  5. Step 5: Solve for x
    x = 46,883,395,201.10/319,478.10
  6. Step 6: Final answer
    x = 146,749.95

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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.