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Finding the Fourth Proportional to 290,463.57, 435,769.28 and 170,621.87

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Solution

The fourth proportional to 290,463.57, 435,769.28 and 170,621.87 is: 255,976.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,463.57 : 435,769.28 = 170,621.87 : x
  2. Step 2: Convert to fraction form
    290,463.57/435,769.28 = 170,621.87/x
  3. Step 3: Cross multiply
    290,463.57x = 435,769.28 × 170,621.87
  4. Step 4: Simplify right side
    290,463.57x = 74,351,766,410.20
  5. Step 5: Solve for x
    x = 74,351,766,410.20/290,463.57
  6. Step 6: Final answer
    x = 255,976.22

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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.