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Finding the Fourth Proportional to 236,613.70, 354,834.15 and 78,847.30

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Solution

The fourth proportional to 236,613.70, 354,834.15 and 78,847.30 is: 118,242.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,613.70 : 354,834.15 = 78,847.30 : x
  2. Step 2: Convert to fraction form
    236,613.70/354,834.15 = 78,847.30/x
  3. Step 3: Cross multiply
    236,613.70x = 354,834.15 × 78,847.30
  4. Step 4: Simplify right side
    236,613.70x = 27,977,714,675.30
  5. Step 5: Solve for x
    x = 27,977,714,675.30/236,613.70
  6. Step 6: Final answer
    x = 118,242.16

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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.