Home / 387,429.29-534,662.30-212,997.36

Finding the Fourth Proportional to 387,429.29, 534,662.30 and 212,997.36

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Solution

The fourth proportional to 387,429.29, 534,662.30 and 212,997.36 is: 293,941.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,429.29 : 534,662.30 = 212,997.36 : x
  2. Step 2: Convert to fraction form
    387,429.29/534,662.30 = 212,997.36/x
  3. Step 3: Cross multiply
    387,429.29x = 534,662.30 × 212,997.36
  4. Step 4: Simplify right side
    387,429.29x = 113,881,658,391.53
  5. Step 5: Solve for x
    x = 113,881,658,391.53/387,429.29
  6. Step 6: Final answer
    x = 293,941.79

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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.