Home / 315,972.18-436,041.72-172,732.14

Finding the Fourth Proportional to 315,972.18, 436,041.72 and 172,732.14

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Solution

The fourth proportional to 315,972.18, 436,041.72 and 172,732.14 is: 238,370.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,972.18 : 436,041.72 = 172,732.14 : x
  2. Step 2: Convert to fraction form
    315,972.18/436,041.72 = 172,732.14/x
  3. Step 3: Cross multiply
    315,972.18x = 436,041.72 × 172,732.14
  4. Step 4: Simplify right side
    315,972.18x = 75,318,419,424.88
  5. Step 5: Solve for x
    x = 75,318,419,424.88/315,972.18
  6. Step 6: Final answer
    x = 238,370.41

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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.