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Finding the Fourth Proportional to 644,167.19, 888,751.37 and 372,135.81

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Solution

The fourth proportional to 644,167.19, 888,751.37 and 372,135.81 is: 513,432.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,167.19 : 888,751.37 = 372,135.81 : x
  2. Step 2: Convert to fraction form
    644,167.19/888,751.37 = 372,135.81/x
  3. Step 3: Cross multiply
    644,167.19x = 888,751.37 × 372,135.81
  4. Step 4: Simplify right side
    644,167.19x = 330,736,209,102.88
  5. Step 5: Solve for x
    x = 330,736,209,102.88/644,167.19
  6. Step 6: Final answer
    x = 513,432.25

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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.