Home / 389,851.13-584,712.61-137,072.21

Finding the Fourth Proportional to 389,851.13, 584,712.61 and 137,072.21

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Solution

The fourth proportional to 389,851.13, 584,712.61 and 137,072.21 is: 205,585.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,851.13 : 584,712.61 = 137,072.21 : x
  2. Step 2: Convert to fraction form
    389,851.13/584,712.61 = 137,072.21/x
  3. Step 3: Cross multiply
    389,851.13x = 584,712.61 × 137,072.21
  4. Step 4: Simplify right side
    389,851.13x = 80,147,846,401.32
  5. Step 5: Solve for x
    x = 80,147,846,401.32/389,851.13
  6. Step 6: Final answer
    x = 205,585.77

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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.