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Finding the Fourth Proportional to 603,722.78, 905,615.18 and 154,447.52

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Solution

The fourth proportional to 603,722.78, 905,615.18 and 154,447.52 is: 231,679.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,722.78 : 905,615.18 = 154,447.52 : x
  2. Step 2: Convert to fraction form
    603,722.78/905,615.18 = 154,447.52/x
  3. Step 3: Cross multiply
    603,722.78x = 905,615.18 × 154,447.52
  4. Step 4: Simplify right side
    603,722.78x = 139,870,017,853.12
  5. Step 5: Solve for x
    x = 139,870,017,853.12/603,722.78
  6. Step 6: Final answer
    x = 231,679.21

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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.