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Finding the Fourth Proportional to 361,699.70, 542,617.60 and 145,574.96

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Solution

The fourth proportional to 361,699.70, 542,617.60 and 145,574.96 is: 218,389.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,699.70 : 542,617.60 = 145,574.96 : x
  2. Step 2: Convert to fraction form
    361,699.70/542,617.60 = 145,574.96/x
  3. Step 3: Cross multiply
    361,699.70x = 542,617.60 × 145,574.96
  4. Step 4: Simplify right side
    361,699.70x = 78,991,535,415.30
  5. Step 5: Solve for x
    x = 78,991,535,415.30/361,699.70
  6. Step 6: Final answer
    x = 218,389.83

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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.