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Finding the Fourth Proportional to 387,609.30, 581,175.81 and 150,675.80

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Solution

The fourth proportional to 387,609.30, 581,175.81 and 150,675.80 is: 225,921.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,609.30 : 581,175.81 = 150,675.80 : x
  2. Step 2: Convert to fraction form
    387,609.30/581,175.81 = 150,675.80/x
  3. Step 3: Cross multiply
    387,609.30x = 581,175.81 × 150,675.80
  4. Step 4: Simplify right side
    387,609.30x = 87,569,127,206.52
  5. Step 5: Solve for x
    x = 87,569,127,206.52/387,609.30
  6. Step 6: Final answer
    x = 225,921.12

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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.