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Finding the Fourth Proportional to 545,242.50, 753,064.56 and 363,638.79

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Solution

The fourth proportional to 545,242.50, 753,064.56 and 363,638.79 is: 502,241.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,242.50 : 753,064.56 = 363,638.79 : x
  2. Step 2: Convert to fraction form
    545,242.50/753,064.56 = 363,638.79/x
  3. Step 3: Cross multiply
    545,242.50x = 753,064.56 × 363,638.79
  4. Step 4: Simplify right side
    545,242.50x = 273,843,485,390.28
  5. Step 5: Solve for x
    x = 273,843,485,390.28/545,242.50
  6. Step 6: Final answer
    x = 502,241.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.