Home / 257,839.16-355,812.52-143,111.12

Finding the Fourth Proportional to 257,839.16, 355,812.52 and 143,111.12

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Solution

The fourth proportional to 257,839.16, 355,812.52 and 143,111.12 is: 197,490.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,839.16 : 355,812.52 = 143,111.12 : x
  2. Step 2: Convert to fraction form
    257,839.16/355,812.52 = 143,111.12/x
  3. Step 3: Cross multiply
    257,839.16x = 355,812.52 × 143,111.12
  4. Step 4: Simplify right side
    257,839.16x = 50,920,728,247.22
  5. Step 5: Solve for x
    x = 50,920,728,247.22/257,839.16
  6. Step 6: Final answer
    x = 197,490.28

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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.