Home / 257,721.21-355,673.03-144,551.25

Finding the Fourth Proportional to 257,721.21, 355,673.03 and 144,551.25

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Solution

The fourth proportional to 257,721.21, 355,673.03 and 144,551.25 is: 199,490.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,721.21 : 355,673.03 = 144,551.25 : x
  2. Step 2: Convert to fraction form
    257,721.21/355,673.03 = 144,551.25/x
  3. Step 3: Cross multiply
    257,721.21x = 355,673.03 × 144,551.25
  4. Step 4: Simplify right side
    257,721.21x = 51,412,980,355.03
  5. Step 5: Solve for x
    x = 51,412,980,355.03/257,721.21
  6. Step 6: Final answer
    x = 199,490.68

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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.