Home / 315,938.68-436,007.10-172,708.44

Finding the Fourth Proportional to 315,938.68, 436,007.10 and 172,708.44

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Solution

The fourth proportional to 315,938.68, 436,007.10 and 172,708.44 is: 238,344.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,938.68 : 436,007.10 = 172,708.44 : x
  2. Step 2: Convert to fraction form
    315,938.68/436,007.10 = 172,708.44/x
  3. Step 3: Cross multiply
    315,938.68x = 436,007.10 × 172,708.44
  4. Step 4: Simplify right side
    315,938.68x = 75,302,106,069.92
  5. Step 5: Solve for x
    x = 75,302,106,069.92/315,938.68
  6. Step 6: Final answer
    x = 238,344.05

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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.