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Finding the Fourth Proportional to 315,675.37, 435,616.01 and 172,407.97

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Solution

The fourth proportional to 315,675.37, 435,616.01 and 172,407.97 is: 237,914.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,675.37 : 435,616.01 = 172,407.97 : x
  2. Step 2: Convert to fraction form
    315,675.37/435,616.01 = 172,407.97/x
  3. Step 3: Cross multiply
    315,675.37x = 435,616.01 × 172,407.97
  4. Step 4: Simplify right side
    315,675.37x = 75,103,671,121.56
  5. Step 5: Solve for x
    x = 75,103,671,121.56/315,675.37
  6. Step 6: Final answer
    x = 237,914.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.