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Finding the Fourth Proportional to 315,930.38, 473,895.56 and 126,476.03

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Solution

The fourth proportional to 315,930.38, 473,895.56 and 126,476.03 is: 189,714.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,930.38 : 473,895.56 = 126,476.03 : x
  2. Step 2: Convert to fraction form
    315,930.38/473,895.56 = 126,476.03/x
  3. Step 3: Cross multiply
    315,930.38x = 473,895.56 × 126,476.03
  4. Step 4: Simplify right side
    315,930.38x = 59,936,430,564.36
  5. Step 5: Solve for x
    x = 59,936,430,564.36/315,930.38
  6. Step 6: Final answer
    x = 189,714.05

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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.