Home / 257,261.26-355,033.20-155,285.10

Finding the Fourth Proportional to 257,261.26, 355,033.20 and 155,285.10

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Solution

The fourth proportional to 257,261.26, 355,033.20 and 155,285.10 is: 214,301.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,261.26 : 355,033.20 = 155,285.10 : x
  2. Step 2: Convert to fraction form
    257,261.26/355,033.20 = 155,285.10/x
  3. Step 3: Cross multiply
    257,261.26x = 355,033.20 × 155,285.10
  4. Step 4: Simplify right side
    257,261.26x = 55,131,365,965.32
  5. Step 5: Solve for x
    x = 55,131,365,965.32/257,261.26
  6. Step 6: Final answer
    x = 214,301.08

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1.5x scale

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.