Home / 257,639.32-355,512.54-155,726.20

Finding the Fourth Proportional to 257,639.32, 355,512.54 and 155,726.20

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Solution

The fourth proportional to 257,639.32, 355,512.54 and 155,726.20 is: 214,884.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,639.32 : 355,512.54 = 155,726.20 : x
  2. Step 2: Convert to fraction form
    257,639.32/355,512.54 = 155,726.20/x
  3. Step 3: Cross multiply
    257,639.32x = 355,512.54 × 155,726.20
  4. Step 4: Simplify right side
    257,639.32x = 55,362,616,906.55
  5. Step 5: Solve for x
    x = 55,362,616,906.55/257,639.32
  6. Step 6: Final answer
    x = 214,884.19

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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.