Home / 257,039.19-354,704.40-142,315.56

Finding the Fourth Proportional to 257,039.19, 354,704.40 and 142,315.56

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Solution

The fourth proportional to 257,039.19, 354,704.40 and 142,315.56 is: 196,390.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,039.19 : 354,704.40 = 142,315.56 : x
  2. Step 2: Convert to fraction form
    257,039.19/354,704.40 = 142,315.56/x
  3. Step 3: Cross multiply
    257,039.19x = 354,704.40 × 142,315.56
  4. Step 4: Simplify right side
    257,039.19x = 50,479,955,320.46
  5. Step 5: Solve for x
    x = 50,479,955,320.46/257,039.19
  6. Step 6: Final answer
    x = 196,390.11

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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.