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Finding the Fourth Proportional to 387,622.40, 581,318.40 and 150,828.80

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Solution

The fourth proportional to 387,622.40, 581,318.40 and 150,828.80 is: 226,198.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,622.40 : 581,318.40 = 150,828.80 : x
  2. Step 2: Convert to fraction form
    387,622.40/581,318.40 = 150,828.80/x
  3. Step 3: Cross multiply
    387,622.40x = 581,318.40 × 150,828.80
  4. Step 4: Simplify right side
    387,622.40x = 87,679,556,689.92
  5. Step 5: Solve for x
    x = 87,679,556,689.92/387,622.40
  6. Step 6: Final answer
    x = 226,198.37

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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.