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Finding the Fourth Proportional to 207,792.45, 310,911.06 and 137,808.45

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Solution

The fourth proportional to 207,792.45, 310,911.06 and 137,808.45 is: 206,196.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,792.45 : 310,911.06 = 137,808.45 : x
  2. Step 2: Convert to fraction form
    207,792.45/310,911.06 = 137,808.45/x
  3. Step 3: Cross multiply
    207,792.45x = 310,911.06 × 137,808.45
  4. Step 4: Simplify right side
    207,792.45x = 42,846,171,266.46
  5. Step 5: Solve for x
    x = 42,846,171,266.46/207,792.45
  6. Step 6: Final answer
    x = 206,196.96

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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.