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Finding the Fourth Proportional to 224,372.86, 309,629.12 and 128,885.69

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Solution

The fourth proportional to 224,372.86, 309,629.12 and 128,885.69 is: 177,859.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,372.86 : 309,629.12 = 128,885.69 : x
  2. Step 2: Convert to fraction form
    224,372.86/309,629.12 = 128,885.69/x
  3. Step 3: Cross multiply
    224,372.86x = 309,629.12 × 128,885.69
  4. Step 4: Simplify right side
    224,372.86x = 39,906,762,904.94
  5. Step 5: Solve for x
    x = 39,906,762,904.94/224,372.86
  6. Step 6: Final answer
    x = 177,859.14

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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.