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Finding the Fourth Proportional to 387,640.80, 581,029.20 and 150,904.80

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Solution

The fourth proportional to 387,640.80, 581,029.20 and 150,904.80 is: 226,189.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,640.80 : 581,029.20 = 150,904.80 : x
  2. Step 2: Convert to fraction form
    387,640.80/581,029.20 = 150,904.80/x
  3. Step 3: Cross multiply
    387,640.80x = 581,029.20 × 150,904.80
  4. Step 4: Simplify right side
    387,640.80x = 87,680,095,220.16
  5. Step 5: Solve for x
    x = 87,680,095,220.16/387,640.80
  6. Step 6: Final answer
    x = 226,189.03

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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.