Home / 315,315.32-435,144.36-172,084.56

Finding the Fourth Proportional to 315,315.32, 435,144.36 and 172,084.56

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Solution

The fourth proportional to 315,315.32, 435,144.36 and 172,084.56 is: 237,481.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,315.32 : 435,144.36 = 172,084.56 : x
  2. Step 2: Convert to fraction form
    315,315.32/435,144.36 = 172,084.56/x
  3. Step 3: Cross multiply
    315,315.32x = 435,144.36 × 172,084.56
  4. Step 4: Simplify right side
    315,315.32x = 74,881,625,727.08
  5. Step 5: Solve for x
    x = 74,881,625,727.08/315,315.32
  6. Step 6: Final answer
    x = 237,481.72

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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.