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Finding the Fourth Proportional to 207,707.40, 311,123.70 and 168,341.40

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Solution

The fourth proportional to 207,707.40, 311,123.70 and 168,341.40 is: 252,157.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,707.40 : 311,123.70 = 168,341.40 : x
  2. Step 2: Convert to fraction form
    207,707.40/311,123.70 = 168,341.40/x
  3. Step 3: Cross multiply
    207,707.40x = 311,123.70 × 168,341.40
  4. Step 4: Simplify right side
    207,707.40x = 52,374,999,231.18
  5. Step 5: Solve for x
    x = 52,374,999,231.18/207,707.40
  6. Step 6: Final answer
    x = 252,157.60

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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.