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Finding the Fourth Proportional to 496,086.90, 744,134.40 and 159,128.06

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Solution

The fourth proportional to 496,086.90, 744,134.40 and 159,128.06 is: 238,693.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,086.90 : 744,134.40 = 159,128.06 : x
  2. Step 2: Convert to fraction form
    496,086.90/744,134.40 = 159,128.06/x
  3. Step 3: Cross multiply
    496,086.90x = 744,134.40 × 159,128.06
  4. Step 4: Simplify right side
    496,086.90x = 118,412,663,451.26
  5. Step 5: Solve for x
    x = 118,412,663,451.26/496,086.90
  6. Step 6: Final answer
    x = 238,693.39

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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.