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Finding the Fourth Proportional to 365,485.96, 548,090.70 and 143,749

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Solution

The fourth proportional to 365,485.96, 548,090.70 and 143,749 is: 215,569.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,485.96 : 548,090.70 = 143,749 : x
  2. Step 2: Convert to fraction form
    365,485.96/548,090.70 = 143,749/x
  3. Step 3: Cross multiply
    365,485.96x = 548,090.70 × 143,749
  4. Step 4: Simplify right side
    365,485.96x = 78,787,490,034.30
  5. Step 5: Solve for x
    x = 78,787,490,034.30/365,485.96
  6. Step 6: Final answer
    x = 215,569.13

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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.