Home / 464,389.21-640,819.78-257,664.25

Finding the Fourth Proportional to 464,389.21, 640,819.78 and 257,664.25

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Solution

The fourth proportional to 464,389.21, 640,819.78 and 257,664.25 is: 355,555.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,389.21 : 640,819.78 = 257,664.25 : x
  2. Step 2: Convert to fraction form
    464,389.21/640,819.78 = 257,664.25/x
  3. Step 3: Cross multiply
    464,389.21x = 640,819.78 × 257,664.25
  4. Step 4: Simplify right side
    464,389.21x = 165,116,347,998.87
  5. Step 5: Solve for x
    x = 165,116,347,998.87/464,389.21
  6. Step 6: Final answer
    x = 355,555.95

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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.