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Finding the Fourth Proportional to 387,871.50, 535,328.43 and 224,504.37

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Solution

The fourth proportional to 387,871.50, 535,328.43 and 224,504.37 is: 309,854.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,871.50 : 535,328.43 = 224,504.37 : x
  2. Step 2: Convert to fraction form
    387,871.50/535,328.43 = 224,504.37/x
  3. Step 3: Cross multiply
    387,871.50x = 535,328.43 × 224,504.37
  4. Step 4: Simplify right side
    387,871.50x = 120,183,571,920.24
  5. Step 5: Solve for x
    x = 120,183,571,920.24/387,871.50
  6. Step 6: Final answer
    x = 309,854.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.