Home / 447,021.10-616,885.79-243,072.15

Finding the Fourth Proportional to 447,021.10, 616,885.79 and 243,072.15

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Solution

The fourth proportional to 447,021.10, 616,885.79 and 243,072.15 is: 335,437.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,021.10 : 616,885.79 = 243,072.15 : x
  2. Step 2: Convert to fraction form
    447,021.10/616,885.79 = 243,072.15/x
  3. Step 3: Cross multiply
    447,021.10x = 616,885.79 × 243,072.15
  4. Step 4: Simplify right side
    447,021.10x = 149,947,750,979.96
  5. Step 5: Solve for x
    x = 149,947,750,979.96/447,021.10
  6. Step 6: Final answer
    x = 335,437.75

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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.