Home / 315,949.96-436,021.54-172,706.92

Finding the Fourth Proportional to 315,949.96, 436,021.54 and 172,706.92

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Solution

The fourth proportional to 315,949.96, 436,021.54 and 172,706.92 is: 238,341.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,949.96 : 436,021.54 = 172,706.92 : x
  2. Step 2: Convert to fraction form
    315,949.96/436,021.54 = 172,706.92/x
  3. Step 3: Cross multiply
    315,949.96x = 436,021.54 × 172,706.92
  4. Step 4: Simplify right side
    315,949.96x = 75,303,937,227.06
  5. Step 5: Solve for x
    x = 75,303,937,227.06/315,949.96
  6. Step 6: Final answer
    x = 238,341.34

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1.5x scale

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.