Home / 395,199.74-545,477.83-257,721.35

Finding the Fourth Proportional to 395,199.74, 545,477.83 and 257,721.35

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Solution

The fourth proportional to 395,199.74, 545,477.83 and 257,721.35 is: 355,722.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,199.74 : 545,477.83 = 257,721.35 : x
  2. Step 2: Convert to fraction form
    395,199.74/545,477.83 = 257,721.35/x
  3. Step 3: Cross multiply
    395,199.74x = 545,477.83 × 257,721.35
  4. Step 4: Simplify right side
    395,199.74x = 140,581,279,370.98
  5. Step 5: Solve for x
    x = 140,581,279,370.98/395,199.74
  6. Step 6: Final answer
    x = 355,722.09

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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.