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Finding the Fourth Proportional to 224,799.12, 309,900.98 and 138,700.60

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Solution

The fourth proportional to 224,799.12, 309,900.98 and 138,700.60 is: 191,208.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,799.12 : 309,900.98 = 138,700.60 : x
  2. Step 2: Convert to fraction form
    224,799.12/309,900.98 = 138,700.60/x
  3. Step 3: Cross multiply
    224,799.12x = 309,900.98 × 138,700.60
  4. Step 4: Simplify right side
    224,799.12x = 42,983,451,866.59
  5. Step 5: Solve for x
    x = 42,983,451,866.59/224,799.12
  6. Step 6: Final answer
    x = 191,208.27

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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.