Home / 389,972.16-585,045.66-123,741.36

Finding the Fourth Proportional to 389,972.16, 585,045.66 and 123,741.36

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Solution

The fourth proportional to 389,972.16, 585,045.66 and 123,741.36 is: 185,639.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,972.16 : 585,045.66 = 123,741.36 : x
  2. Step 2: Convert to fraction form
    389,972.16/585,045.66 = 123,741.36/x
  3. Step 3: Cross multiply
    389,972.16x = 585,045.66 × 123,741.36
  4. Step 4: Simplify right side
    389,972.16x = 72,394,345,630.50
  5. Step 5: Solve for x
    x = 72,394,345,630.50/389,972.16
  6. Step 6: Final answer
    x = 185,639.78

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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.