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Finding the Fourth Proportional to 315,402.31, 435,190.21 and 181,240.39

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Solution

The fourth proportional to 315,402.31, 435,190.21 and 181,240.39 is: 250,074.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,402.31 : 435,190.21 = 181,240.39 : x
  2. Step 2: Convert to fraction form
    315,402.31/435,190.21 = 181,240.39/x
  3. Step 3: Cross multiply
    315,402.31x = 435,190.21 × 181,240.39
  4. Step 4: Simplify right side
    315,402.31x = 78,874,043,384.58
  5. Step 5: Solve for x
    x = 78,874,043,384.58/315,402.31
  6. Step 6: Final answer
    x = 250,074.40

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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.