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Finding the Fourth Proportional to 545,990.38, 819,102.22 and 191,015.98

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Solution

The fourth proportional to 545,990.38, 819,102.22 and 191,015.98 is: 286,564.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,990.38 : 819,102.22 = 191,015.98 : x
  2. Step 2: Convert to fraction form
    545,990.38/819,102.22 = 191,015.98/x
  3. Step 3: Cross multiply
    545,990.38x = 819,102.22 × 191,015.98
  4. Step 4: Simplify right side
    545,990.38x = 156,461,613,273.48
  5. Step 5: Solve for x
    x = 156,461,613,273.48/545,990.38
  6. Step 6: Final answer
    x = 286,564.78

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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.