Home / 387,467.31-534,684.33-217,690.50

Finding the Fourth Proportional to 387,467.31, 534,684.33 and 217,690.50

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Solution

The fourth proportional to 387,467.31, 534,684.33 and 217,690.50 is: 300,401.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,467.31 : 534,684.33 = 217,690.50 : x
  2. Step 2: Convert to fraction form
    387,467.31/534,684.33 = 217,690.50/x
  3. Step 3: Cross multiply
    387,467.31x = 534,684.33 × 217,690.50
  4. Step 4: Simplify right side
    387,467.31x = 116,395,699,139.87
  5. Step 5: Solve for x
    x = 116,395,699,139.87/387,467.31
  6. Step 6: Final answer
    x = 300,401.34

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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.