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Finding the Fourth Proportional to 418,820.28, 628,300.98 and 194,089.56

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Solution

The fourth proportional to 418,820.28, 628,300.98 and 194,089.56 is: 291,167.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,820.28 : 628,300.98 = 194,089.56 : x
  2. Step 2: Convert to fraction form
    418,820.28/628,300.98 = 194,089.56/x
  3. Step 3: Cross multiply
    418,820.28x = 628,300.98 × 194,089.56
  4. Step 4: Simplify right side
    418,820.28x = 121,946,660,755.77
  5. Step 5: Solve for x
    x = 121,946,660,755.77/418,820.28
  6. Step 6: Final answer
    x = 291,167.04

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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.