Home / 315,983.13-436,056.64-172,743.13

Finding the Fourth Proportional to 315,983.13, 436,056.64 and 172,743.13

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Solution

The fourth proportional to 315,983.13, 436,056.64 and 172,743.13 is: 238,385.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,983.13 : 436,056.64 = 172,743.13 : x
  2. Step 2: Convert to fraction form
    315,983.13/436,056.64 = 172,743.13/x
  3. Step 3: Cross multiply
    315,983.13x = 436,056.64 × 172,743.13
  4. Step 4: Simplify right side
    315,983.13x = 75,325,788,850.88
  5. Step 5: Solve for x
    x = 75,325,788,850.88/315,983.13
  6. Step 6: Final answer
    x = 238,385.48

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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.