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Finding the Fourth Proportional to 207,763.80, 311,645.70 and 172,334.40

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Solution

The fourth proportional to 207,763.80, 311,645.70 and 172,334.40 is: 258,501.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,763.80 : 311,645.70 = 172,334.40 : x
  2. Step 2: Convert to fraction form
    207,763.80/311,645.70 = 172,334.40/x
  3. Step 3: Cross multiply
    207,763.80x = 311,645.70 × 172,334.40
  4. Step 4: Simplify right side
    207,763.80x = 53,707,274,722.08
  5. Step 5: Solve for x
    x = 53,707,274,722.08/207,763.80
  6. Step 6: Final answer
    x = 258,501.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.