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Finding the Fourth Proportional to 223,008.30, 334,512.45 and 128,529.90

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Solution

The fourth proportional to 223,008.30, 334,512.45 and 128,529.90 is: 192,794.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,008.30 : 334,512.45 = 128,529.90 : x
  2. Step 2: Convert to fraction form
    223,008.30/334,512.45 = 128,529.90/x
  3. Step 3: Cross multiply
    223,008.30x = 334,512.45 × 128,529.90
  4. Step 4: Simplify right side
    223,008.30x = 42,994,851,747.26
  5. Step 5: Solve for x
    x = 42,994,851,747.26/223,008.30
  6. Step 6: Final answer
    x = 192,794.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.