Home / 395,389.90-545,638.35-214,103.26

Finding the Fourth Proportional to 395,389.90, 545,638.35 and 214,103.26

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Solution

The fourth proportional to 395,389.90, 545,638.35 and 214,103.26 is: 295,462.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,389.90 : 545,638.35 = 214,103.26 : x
  2. Step 2: Convert to fraction form
    395,389.90/545,638.35 = 214,103.26/x
  3. Step 3: Cross multiply
    395,389.90x = 545,638.35 × 214,103.26
  4. Step 4: Simplify right side
    395,389.90x = 116,822,949,516.02
  5. Step 5: Solve for x
    x = 116,822,949,516.02/395,389.90
  6. Step 6: Final answer
    x = 295,462.65

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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.