Home / 289,270.80-434,186.07-139,616.43

Finding the Fourth Proportional to 289,270.80, 434,186.07 and 139,616.43

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Solution

The fourth proportional to 289,270.80, 434,186.07 and 139,616.43 is: 209,559.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,270.80 : 434,186.07 = 139,616.43 : x
  2. Step 2: Convert to fraction form
    289,270.80/434,186.07 = 139,616.43/x
  3. Step 3: Cross multiply
    289,270.80x = 434,186.07 × 139,616.43
  4. Step 4: Simplify right side
    289,270.80x = 60,619,509,049.13
  5. Step 5: Solve for x
    x = 60,619,509,049.13/289,270.80
  6. Step 6: Final answer
    x = 209,559.72

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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.