Home / 285,545.39-428,319.07-72,313.23

Finding the Fourth Proportional to 285,545.39, 428,319.07 and 72,313.23

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Solution

The fourth proportional to 285,545.39, 428,319.07 and 72,313.23 is: 108,470.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,545.39 : 428,319.07 = 72,313.23 : x
  2. Step 2: Convert to fraction form
    285,545.39/428,319.07 = 72,313.23/x
  3. Step 3: Cross multiply
    285,545.39x = 428,319.07 × 72,313.23
  4. Step 4: Simplify right side
    285,545.39x = 30,973,135,241.51
  5. Step 5: Solve for x
    x = 30,973,135,241.51/285,545.39
  6. Step 6: Final answer
    x = 108,470.09

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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.