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Finding the Fourth Proportional to 490,624.40, 735,936.60 and 153,693.20

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Solution

The fourth proportional to 490,624.40, 735,936.60 and 153,693.20 is: 230,539.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,624.40 : 735,936.60 = 153,693.20 : x
  2. Step 2: Convert to fraction form
    490,624.40/735,936.60 = 153,693.20/x
  3. Step 3: Cross multiply
    490,624.40x = 735,936.60 × 153,693.20
  4. Step 4: Simplify right side
    490,624.40x = 113,108,451,051.12
  5. Step 5: Solve for x
    x = 113,108,451,051.12/490,624.40
  6. Step 6: Final answer
    x = 230,539.80

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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.