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Finding the Fourth Proportional to 207,637.62, 311,404.59 and 67,436.34

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Solution

The fourth proportional to 207,637.62, 311,404.59 and 67,436.34 is: 101,137.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,637.62 : 311,404.59 = 67,436.34 : x
  2. Step 2: Convert to fraction form
    207,637.62/311,404.59 = 67,436.34/x
  3. Step 3: Cross multiply
    207,637.62x = 311,404.59 × 67,436.34
  4. Step 4: Simplify right side
    207,637.62x = 20,999,985,808.80
  5. Step 5: Solve for x
    x = 20,999,985,808.80/207,637.62
  6. Step 6: Final answer
    x = 101,137.67

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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.