Home / 257,313.16-355,111.86-161,901.64

Finding the Fourth Proportional to 257,313.16, 355,111.86 and 161,901.64

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Solution

The fourth proportional to 257,313.16, 355,111.86 and 161,901.64 is: 223,436.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,313.16 : 355,111.86 = 161,901.64 : x
  2. Step 2: Convert to fraction form
    257,313.16/355,111.86 = 161,901.64/x
  3. Step 3: Cross multiply
    257,313.16x = 355,111.86 × 161,901.64
  4. Step 4: Simplify right side
    257,313.16x = 57,493,192,517.45
  5. Step 5: Solve for x
    x = 57,493,192,517.45/257,313.16
  6. Step 6: Final answer
    x = 223,436.66

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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.