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Finding the Fourth Proportional to 390,763.62, 586,063.42 and 110,215.26

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Solution

The fourth proportional to 390,763.62, 586,063.42 and 110,215.26 is: 165,299.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,763.62 : 586,063.42 = 110,215.26 : x
  2. Step 2: Convert to fraction form
    390,763.62/586,063.42 = 110,215.26/x
  3. Step 3: Cross multiply
    390,763.62x = 586,063.42 × 110,215.26
  4. Step 4: Simplify right side
    390,763.62x = 64,593,131,660.71
  5. Step 5: Solve for x
    x = 64,593,131,660.71/390,763.62
  6. Step 6: Final answer
    x = 165,299.76

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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.