Home / 257,839.18-355,812.56-143,111.14

Finding the Fourth Proportional to 257,839.18, 355,812.56 and 143,111.14

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Solution

The fourth proportional to 257,839.18, 355,812.56 and 143,111.14 is: 197,490.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,839.18 : 355,812.56 = 143,111.14 : x
  2. Step 2: Convert to fraction form
    257,839.18/355,812.56 = 143,111.14/x
  3. Step 3: Cross multiply
    257,839.18x = 355,812.56 × 143,111.14
  4. Step 4: Simplify right side
    257,839.18x = 50,920,741,087.92
  5. Step 5: Solve for x
    x = 50,920,741,087.92/257,839.18
  6. Step 6: Final answer
    x = 197,490.32

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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.