Home / 257,620.64-355,491.07-142,897.28

Finding the Fourth Proportional to 257,620.64, 355,491.07 and 142,897.28

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Solution

The fourth proportional to 257,620.64, 355,491.07 and 142,897.28 is: 197,184.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,620.64 : 355,491.07 = 142,897.28 : x
  2. Step 2: Convert to fraction form
    257,620.64/355,491.07 = 142,897.28/x
  3. Step 3: Cross multiply
    257,620.64x = 355,491.07 × 142,897.28
  4. Step 4: Simplify right side
    257,620.64x = 50,798,704,832.59
  5. Step 5: Solve for x
    x = 50,798,704,832.59/257,620.64
  6. Step 6: Final answer
    x = 197,184.15

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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.