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Finding the Fourth Proportional to 220,299.57, 304,109.45 and 139,850.78

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Solution

The fourth proportional to 220,299.57, 304,109.45 and 139,850.78 is: 193,055.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,299.57 : 304,109.45 = 139,850.78 : x
  2. Step 2: Convert to fraction form
    220,299.57/304,109.45 = 139,850.78/x
  3. Step 3: Cross multiply
    220,299.57x = 304,109.45 × 139,850.78
  4. Step 4: Simplify right side
    220,299.57x = 42,529,941,568.07
  5. Step 5: Solve for x
    x = 42,529,941,568.07/220,299.57
  6. Step 6: Final answer
    x = 193,055.04

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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.