Home / 257,760.80-355,709.14-143,056.72

Finding the Fourth Proportional to 257,760.80, 355,709.14 and 143,056.72

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Solution

The fourth proportional to 257,760.80, 355,709.14 and 143,056.72 is: 197,417.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,760.80 : 355,709.14 = 143,056.72 : x
  2. Step 2: Convert to fraction form
    257,760.80/355,709.14 = 143,056.72/x
  3. Step 3: Cross multiply
    257,760.80x = 355,709.14 × 143,056.72
  4. Step 4: Simplify right side
    257,760.80x = 50,886,582,127.14
  5. Step 5: Solve for x
    x = 50,886,582,127.14/257,760.80
  6. Step 6: Final answer
    x = 197,417.85

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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.