Home / 257,759.32-355,707.14-143,055.28

Finding the Fourth Proportional to 257,759.32, 355,707.14 and 143,055.28

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Solution

The fourth proportional to 257,759.32, 355,707.14 and 143,055.28 is: 197,415.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,759.32 : 355,707.14 = 143,055.28 : x
  2. Step 2: Convert to fraction form
    257,759.32/355,707.14 = 143,055.28/x
  3. Step 3: Cross multiply
    257,759.32x = 355,707.14 × 143,055.28
  4. Step 4: Simplify right side
    257,759.32x = 50,885,784,510.70
  5. Step 5: Solve for x
    x = 50,885,784,510.70/257,759.32
  6. Step 6: Final answer
    x = 197,415.89

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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.