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Finding the Fourth Proportional to 224,619.82, 309,987.90 and 122,654.77

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Solution

The fourth proportional to 224,619.82, 309,987.90 and 122,654.77 is: 169,270.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,619.82 : 309,987.90 = 122,654.77 : x
  2. Step 2: Convert to fraction form
    224,619.82/309,987.90 = 122,654.77/x
  3. Step 3: Cross multiply
    224,619.82x = 309,987.90 × 122,654.77
  4. Step 4: Simplify right side
    224,619.82x = 38,021,493,802.31
  5. Step 5: Solve for x
    x = 38,021,493,802.31/224,619.82
  6. Step 6: Final answer
    x = 169,270.43

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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.