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Finding the Fourth Proportional to 224,298.48, 309,579.94 and 128,857.80

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Solution

The fourth proportional to 224,298.48, 309,579.94 and 128,857.80 is: 177,851.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,298.48 : 309,579.94 = 128,857.80 : x
  2. Step 2: Convert to fraction form
    224,298.48/309,579.94 = 128,857.80/x
  3. Step 3: Cross multiply
    224,298.48x = 309,579.94 × 128,857.80
  4. Step 4: Simplify right side
    224,298.48x = 39,891,789,992.53
  5. Step 5: Solve for x
    x = 39,891,789,992.53/224,298.48
  6. Step 6: Final answer
    x = 177,851.36

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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.