Home / 315,966.20-436,033.38-172,727.28

Finding the Fourth Proportional to 315,966.20, 436,033.38 and 172,727.28

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Solution

The fourth proportional to 315,966.20, 436,033.38 and 172,727.28 is: 238,363.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,966.20 : 436,033.38 = 172,727.28 : x
  2. Step 2: Convert to fraction form
    315,966.20/436,033.38 = 172,727.28/x
  3. Step 3: Cross multiply
    315,966.20x = 436,033.38 × 172,727.28
  4. Step 4: Simplify right side
    315,966.20x = 75,314,859,716.61
  5. Step 5: Solve for x
    x = 75,314,859,716.61/315,966.20
  6. Step 6: Final answer
    x = 238,363.66

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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.