Home / 257,868.71-355,853.22-143,140.72

Finding the Fourth Proportional to 257,868.71, 355,853.22 and 143,140.72

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Solution

The fourth proportional to 257,868.71, 355,853.22 and 143,140.72 is: 197,531.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,868.71 : 355,853.22 = 143,140.72 : x
  2. Step 2: Convert to fraction form
    257,868.71/355,853.22 = 143,140.72/x
  3. Step 3: Cross multiply
    257,868.71x = 355,853.22 × 143,140.72
  4. Step 4: Simplify right side
    257,868.71x = 50,937,084,345.85
  5. Step 5: Solve for x
    x = 50,937,084,345.85/257,868.71
  6. Step 6: Final answer
    x = 197,531.08

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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.