Home / 257,198.51-355,027.11-209,368.82

Finding the Fourth Proportional to 257,198.51, 355,027.11 and 209,368.82

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Solution

The fourth proportional to 257,198.51, 355,027.11 and 209,368.82 is: 289,004.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,198.51 : 355,027.11 = 209,368.82 : x
  2. Step 2: Convert to fraction form
    257,198.51/355,027.11 = 209,368.82/x
  3. Step 3: Cross multiply
    257,198.51x = 355,027.11 × 209,368.82
  4. Step 4: Simplify right side
    257,198.51x = 74,331,607,088.71
  5. Step 5: Solve for x
    x = 74,331,607,088.71/257,198.51
  6. Step 6: Final answer
    x = 289,004.81

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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.