Home / 257,837.64-355,809.11-143,115.95

Finding the Fourth Proportional to 257,837.64, 355,809.11 and 143,115.95

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Solution

The fourth proportional to 257,837.64, 355,809.11 and 143,115.95 is: 197,496.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,837.64 : 355,809.11 = 143,115.95 : x
  2. Step 2: Convert to fraction form
    257,837.64/355,809.11 = 143,115.95/x
  3. Step 3: Cross multiply
    257,837.64x = 355,809.11 × 143,115.95
  4. Step 4: Simplify right side
    257,837.64x = 50,921,958,970.25
  5. Step 5: Solve for x
    x = 50,921,958,970.25/257,837.64
  6. Step 6: Final answer
    x = 197,496.22

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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.