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Finding the Fourth Proportional to 545,800.11, 818,661.79 and 204,178.38

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Solution

The fourth proportional to 545,800.11, 818,661.79 and 204,178.38 is: 306,253.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,800.11 : 818,661.79 = 204,178.38 : x
  2. Step 2: Convert to fraction form
    545,800.11/818,661.79 = 204,178.38/x
  3. Step 3: Cross multiply
    545,800.11x = 818,661.79 × 204,178.38
  4. Step 4: Simplify right side
    545,800.11x = 167,153,038,050.10
  5. Step 5: Solve for x
    x = 167,153,038,050.10/545,800.11
  6. Step 6: Final answer
    x = 306,253.21

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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.